GLA

              Installation CGA-320 (USA)   Pressure Reduction SINGLE STAGE   CO2 Distribution SINGLEAQUARIUM GLA GRO Planted Aquarium CO2 Regulator Discover the...

              Installation DIN-477 (EU, AU, UK)   Pressure Reduction SINGLE STAGE   CO2 Distribution SINGLEAQUARIUM GLA GRO Planted Aquarium CO2 Regulator...

              Installation PAINTBALL   Pressure Reduction SINGLE STAGE   CO2 Distribution SINGLEAQUARIUM GLA GRO Paintball Planted Aquarium CO2 Regulator The GLA GRO...

              Installation DISPOSABLECO2 CARTRIDGE   Pressure Reduction SINGLE STAGE   CO2 Distribution SINGLEAQUARIUM GLA GRO Cartridge Aquarium CO2 Kit Introducing...

              Installation CGA-320 (USA)   Pressure Reduction DUAL STAGE(TWO STAGE)   CO2 Distribution SINGLE AQUARIUMONE BLOCK MANIFOLD(expandable) GLA PRO-DS-1 Dual...

              Installation DIN-477 (EU, AU, UK)   Pressure Reduction DUAL STAGE(TWO STAGE)   CO2 Distribution SINGLE AQUARIUMONE BLOCK MANIFOLD(expandable) GLA...

              Installation CGA-320 (USA)   Pressure Reduction DUAL STAGE(TWO STAGE)   CO2 Distribution TWO AQUARIUMSTWO BLOCK MANIFOLD(expandable) GLA PRO-DS-2 Dual...

              Installation CGA-320 (USA)   Pressure Reduction DUAL STAGE(TWO STAGE)   CO2 Distribution THREE AQUARIUMSTHREE BLOCK MANIFOLD(expandable) GLA PRO-DS-3...

              Installation CGA-320 (USA)   Pressure Reduction DUAL STAGE(TWO STAGE)   CO2 Distribution FOUR AQUARIUMSFOUR BLOCK MANIFOLD(expandable) GLA PRO-DS-4 Dual...

              Installation CGA-320 (USA)   Pressure Reduction DUAL STAGE(TWO STAGE)   CO2 Distribution FIVE AQUARIUMSFIVE BLOCK MANIFOLD(expandable) GLA PRO-DS-5 Dual...

              Installation CGA-320 (USA)   Pressure Reduction DUAL STAGE(TWO STAGE)   CO2 Distribution SIX AQUARIUMSSIX BLOCK MANIFOLD(expandable) GLA PRO-DS-6 Dual...

              Installation CGA-320 (USA)   Pressure Reduction SINGLE STAGE   CO2 Distribution SINGLEAQUARIUM GLA GRO Planted Aquarium CO2 System GLA's GRO CO2 system...

              Installation CGA-320 (USA)   Pressure Reduction DUAL STAGE(TWO STAGE)   CO2 Distribution SINGLE AQUARIUMONE BLOCK MANIFOLD(expandable) GLA DS-Mini-1...

              Installation CGA-320 (USA)   Pressure Reduction DUAL STAGE(TWO STAGE)   CO2 Distribution SINGLE AQUARIUMONE BLOCK MANIFOLD(expandable) GLA PRO-DS-1 Dual...

GLA splitter add-on to expand CO2 distribution to multiple aquariums. Easy installation. Compatible installation with our GLA GRO CO2 regulators exclusively. Enhance your aquarium’s CO2 distribution with a CO2 regulator splitter, allowing you to...

GLA modular manifold blocks expand CO2 distribution to more aquariums. Each block contains our custom built-in needle valve and bubble counter to direct supply of CO2 to an additional aquarium, independently. for use with GLA modular series of CO2...

Replacement GLA OEM Needle Valve for GLA GRO CO2 Regulator. This OEM replacement needle valve is designed specifically for the GLA GRO CO₂ Regulator, restoring precise and reliable CO₂ flow control for planted aquarium systems. Precision-machined...

OEM replacement acrylic tube for GLA CO2 bubble counters  

OEM replacement O-rings for GLA CO2 bubble counters, 2 pack  

Replacement GLA OEM CO2 bubble counter. Available in two connection size options: Male 10/32 thread or 1/8 FNPT thread (contact GLA or any inquiry into thread size required for your installation). DISCLAIMER: GLA OEM bubble counters are proprietary to...

High quality 2.5lb aluminum CO2 cylinder The perfect size for smaller nature aquarium installations Dimensions: 4.4" D x 14" H CO2 Capacity: 2.5 lb CGA-320 USA Valve Made of high strength Aluminum alloy Corrosion resistant interior and exterior...

High quality 5lb aluminum CO2 cylinder. The perfect size for almost all planted tanks. Dimensions: 5 1/4" D x 18" H CO2 Capacity: 5 lb Made of high strength Aluminum alloy Corrosion resistant interior and exterior. Manufactured in accordance with US...

2 Pack of 74 gram CO2 cartridges, disposable. Shipping, Warranty & Returns This item ships Standard Service (Ground), only.

GLA OEM CO2 replacement seal for the connection between the CO2 regulator and cylinder. This seal needs to be replaced every time the CO2 cylinder is refilled. Clear premium seal. Replace every time you refill your CO2 cylinder.

Nylon replacement seal for the connection between the CO2 regulator and cylinder. This seal needs to be replaced every time the CO2 cylinder is refilled. Nylon replacement seal. Replace every time you refill your CO2 cylinder.

Clear CO2 resistant tubing. High pressure rated.This is NOT silicone tubing which is highly permeable to CO2. With our CO2 resistant tubing, CO2 will not escape and every last drop of CO2 will be put to efficient use. $20 per every 10 feet. Perfect for...

Black CO2 resistant tubing. High pressure rated.This is NOT silicone tubing which is highly permeable to CO2. With our CO2 resistant tubing, CO2 will not escape and every last drop of CO2 will be put to efficient use. $20 per every 10 feet. Perfect for...

White CO2 resistant tubing. High pressure rated.This is NOT silicone tubing which is highly permeable to CO2. With our CO2 resistant tubing, CO2 will not escape and every last drop of CO2 will be put to efficient use. $20 per every 10 feet. Perfect for...

Transparent Green CO2 resistant tubing. High pressure rated. Perfect for use with Atomic brand CO2 equipment. Sold in 10 foot sections. $20 per every 10 feet. Ships as non-cut, continuous lengths up to 50 feet.

Green CO2 resistant tubing. High pressure rated.This is NOT silicone tubing which is highly permeable to CO2. With our CO2 resistant tubing, CO2 will not escape and every last drop of CO2 will be put to efficient use. $20 per every 10 feet. Perfect for...

Gray CO2 resistant tubing. High pressure rated.This is NOT silicone tubing which is highly permeable to CO2. With our CO2 resistant tubing, CO2 will not escape and every last drop of CO2 will be put to efficient use. $20 per every 10 feet. Perfect for...

Transparent Blue CO2 resistant tubing. High pressure rated. Perfect for use with Atomic brand CO2 equipment. Sold in 10 foot sections. $20 per every 10 feet. Ships as non-cut, continuous lengths up to 50 feet.

Nature Aquarium CO2 Atomizer – Ultra-Fine Diffuser – Clay/Tiny Ultra-Fine CO2 Diffusion for Nano & Small Nature Aquariums The Nature Aquarium CO2 Atomizer – Ultra-Fine Diffuser – Tiny delivers precision CO2 diffusion in a...

Nature Aquarium CO2 Atomizer – Ultra-Fine Diffuser – Clay/S Ultra-Fine CO2 Diffusion for Compact & Medium Nature Aquariums The Nature Aquarium CO2 Atomizer – Ultra-Fine Diffuser – Small provides precise CO2 delivery in a...

Nature Aquarium CO2 Atomizer – Ultra-Fine Diffuser – Clay/M Ultra-Fine CO2 Diffusion for Medium & Large Nature Aquariums The Nature Aquarium CO2 Atomizer – Ultra-Fine Diffuser – Medium delivers reliable, high-efficiency CO2...

Nature Aquarium CO2 Atomizer – Ultra-Fine Diffuser – Clay/L Ultra-Fine CO2 Diffusion for Large Nature Aquariums The Nature Aquarium CO2 Atomizer – Ultra-Fine Diffuser – Large delivers powerful and efficient CO2 diffusion for large...

GLA PRO-CO2 Reactor 5L – Maximum CO2 Saturation for Nature Aquariums The GLA PRO-CO2 Reactor 5L is engineered for unmatched CO2 dissolution, delivering maximum efficiency with virtually zero waste. Built for serious aquascapers and high-tech...

GLA Onyx CO₂ Atomizer Diffuser (Ultra-Large) Ultra-Large Black Ceramic CO₂ Diffusion for High-Demand Nature Aquariums The GLA Onyx CO₂ Atomizer Diffuser (Ultra-Large) is a purpose-built, ultra-large in-tank CO₂ diffuser designed for planted aquariums...

CeramicStone CO2 Diffuser Atomizer Elevate your aquarium's health and aesthetics with the Ceramic Stone CO2 Diffuser. This high-quality aquarium accessory is designed to efficiently dissolve CO2 into your tank, promoting vibrant plant growth and a...

Lucid CO2 Diffuser Atomizer (Large) – Precision CO2 Injection for a Thriving Nature Aquarium Maximize CO2 absorption in your planted aquarium with the Lucid CO2 Diffuser Atomizer (Large). Features a 2.5cm ceramic disc for ultra-fine mist, durable...

Lucid CO2 Diffuser Atomizer (Medium) – Precision CO2 Injection for a Thriving Nature Aquarium Optimize CO2 delivery in your planted aquarium with the Lucid CO2 Diffuser Atomizer (Medium). Features a 2cm ceramic disc for fine CO2 mist, durable...

Lucid CO2 Diffuser Atomizer (Nano) – Precision CO2 Injection for a Thriving Nature Aquarium Enhance your planted aquarium with the Lucid CO2 Diffuser Atomizer (Nano), designed for efficient CO2 dissolution to support optimal plant growth. Made from...

Atomic Stainless Steel CO2 Diffuser with Replaceable Ceramic (40cm) The Atomic Stainless Steel CO2 Diffuser with Replaceable Ceramic is a high-performance solution designed for efficient CO2 distribution in rimless nature aquariums. Constructed...

Atomic Stainless Steel CO2 Diffuser with Replaceable Ceramic (35cm) The Atomic Stainless Steel CO2 Diffuser with Replaceable Ceramic is a high-performance solution designed for efficient CO2 distribution in rimless nature aquariums. Constructed...

Atomic Stainless Steel CO2 Diffuser with Replaceable Ceramic (30cm) The Atomic Stainless Steel CO2 Diffuser with Replaceable Ceramic is a high-performance solution designed for efficient CO2 distribution in rimless nature aquariums. Constructed...

Atomic Stainless Steel CO2 Diffuser with Replaceable Ceramic (25cm) The Atomic Stainless Steel CO2 Diffuser with Replaceable Ceramic is a high-performance solution designed for efficient CO2 distribution in rimless nature aquariums. Constructed...

Atomic Stainless Steel CO2 Diffuser with Replaceable Ceramic (2 PIECE) The 2 piece Atomic Stainless Steel CO2 Diffuser with Replaceable Ceramic is a high-performance solution designed for efficient CO2 distribution in rimless nature aquariums...

GLA Glass Orb CO2 Drop Checker Kit - Complete and Ready to Use Take the guesswork out of CO2 monitoring with our GLA Glass Orb CO2 Drop Checker Kit. Designed for precision and simplicity, this elegant drop checker provides a reliable visual indicator of...

GLA Glass CO2 Drop Checker Kit – Complete and Ready to Use Achieve precise CO2 monitoring with the GLA Glass CO2 Drop Checker Kit. Designed for accuracy and ease of use, this high-quality drop checker provides a clear visual indicator of your...

GLA Nectar AIO - All-in-One Liquid Fertilizer for Freshwater Nature Aquariums Elevate the vitality and growth of your planted aquarium with GLA Nectar AIO, a meticulously formulated all-in-one liquid fertilizer that provides your aquatic plants with the...

GLA Nectar AIO/S - Copper-Free All-in-One Liquid Fertilizer for Freshwater Planted Tanks Safe, Effective Nutrition for Sensitive Aquatic Life GLA Nectar AIO/S offers the same comprehensive nutrient blend as our standard GLA Nectar AIO formula but...

GLA Macros & Micros Nectar Bottle Set - Complete Nutrient Solution for Freshwater Planted Aquariums (2 x 1000 ML Bottles) Achieve a thriving, vibrant aquascape with the combined power of GLA Macros Nectar and GLA Micros Nectar. This premium liquid...

GLA Macros Nectar - Macronutrient Liquid Fertilizer for Freshwater Aquariums (1000 ML) Transform your planted aquarium with GLA Macros Nectar, a high-performance macronutrient solution engineered to meet the exacting demands of aquatic plants. This...

GLA Micros Nectar - Micronutrient Liquid Fertilizer for Freshwater Nature Aquariums (1000 ML) Enhance the growth and vitality of your planted aquarium with GLA Micros Nectar, a precisely formulated micronutrient solution designed to support the complex...

GLA PPS-Pro Aquarium Fertilizer Package – N, P, K, Mg & GLA Micros (Bags) Complete PPS-Pro Dry Fertilizer Kit with DTPA & EDTA Chelated Trace Mix The GLA PPS-Pro Aquarium Fertilizer Package delivers a complete dry nutrient system for...

GLA PPS-Pro Aquarium Fertilizer Package – N, P, K, Mg & GLA Micros (Jars) DIY PPS-Pro Nutrient Kit for Precision Planted Aquarium Dosing – Includes DTPA & EDTA Chelated Trace Mix The GLA PPS-Pro Aquarium Fertilizer Package provides a...

GLA PPS-Pro Aquarium Fertilizer Package – N, P, K, Mg & GLA Micros II (Copper-Free, Bags) Shrimp-Safe PPS-Pro Fertilizer System with Copper-Free Trace Mix The GLA PPS-Pro Aquarium Fertilizer Package (Copper-Free, Bags) offers a complete dry...

GLA PPS-Pro Aquarium Fertilizer Package – N, P, K, Mg & GLA Micros II (Copper-Free, Jars) Copper-Free DIY Nutrient Kit for Planted Aquariums Using the PPS-Pro Method The GLA PPS-Pro Aquarium Fertilizer Package (Copper-Free, Jars) is a complete...

GLA Estimative Index (EI) Aquarium Fertilizer Package – NPK + Micronutrients (Bags) High-Dose Nutrient System for Planted Aquariums Using the EI Dosing Method The GLA Estimative Index (EI) Aquarium Fertilizer Package provides a complete dry...

GLA Estimative Index (EI) Aquarium Nutrients Package (Jars) High-Dose NPK + Chelated Trace Nutrients/Micros for EI Fertilization The GLA Estimative Index (EI) Aquarium Nutrients Package is a complete dry fertilizer set designed for aquascapers using...

GLA Macros & Micros – Nature Aquarium Fertilizer Kit for EI & PPS-Pro Dosing (Bags) Complete NPK + Micronutrient System for Planted Aquariums (With Copper) The GLA Macros & Micros Fertilizer Kit (Bags) provides a complete two-part dry...

GLA Macros & Micros – Nature Aquarium Fertilizer Kit for EI & PPS-Pro Dosing (Jars) Dry NPK + Trace Nutrients for Planted Aquariums (With Copper) The GLA Macros & Micros Fertilizer Kit (Jars) provides a complete, precision-formulated...

GLA Macros & Micros II – Shrimp-Safe Nature Aquarium Fertilizer Kit for EI & PPS-Pro Dosing (Copper-Free) (Bags) Copper-Free NPK + Micronutrient System for Sensitive Planted Aquariums The GLA Macros & Micros II Fertilizer Kit (Bags)...

GLA Macros & Micros II – Shrimp-Safe Nature Aquarium Fertilizer Kit for EI & PPS-Pro Dosing (Copper-Free) (Jars) Copper-Free Dry Nutrient Set for Planted Aquariums Using PPS-Pro or EI The GLA Macros & Micros II Fertilizer Kit (Jars)...

GLA Reef Tank Fertilizer Package – 1 lb Bags (KNO₃ & KH₂PO₄) A reef-safe, dry fertilizer combo tailored for reef aquariums and macroalgae systems that require precise nitrogen and phosphorus supplementation. This package includes: Potassium...

GLA Reef Tank Fertilizer Package – 1 lb Jars (KNO₃ & KH₂PO₄) This 2-part fertilizer package is designed to support macro-nutrient demands in reef and marine planted tanks with minimal nitrogen and phosphate levels. It includes: Potassium...

GLA Macromix – Nature Aquarium Fertilizer (Bag) Complete NPK + Magnesium Dry Mix for PPS-Pro & EI Aquarium Dosing GLA Macromix is a professionally blended macronutrient mix that delivers nitrogen (NO₃), phosphorus (PO₄), potassium (K), and...

GLA Macromix – Nature Aquarium Fertilizer (Jar) Complete NPK + Magnesium Dry Mix for PPS-Pro & EI Aquarium Dosing GLA Macromix is a professionally blended macronutrient mix that delivers nitrogen (NO₃), phosphorus (PO₄), potassium (K), and...

GLA Micros Micromix – Chelated Trace Mix for Nature Aquariums (Bag) DTPA + EDTA Chelated Micronutrients for EI & PPS-Pro Aquarium Fertilization – Formulated Specifically for Nature Aquariums GLA Micromix Micros is a professional-grade...

GLA Micros Micromix – Chelated Trace Mix for Nature Aquariums (Jar) DTPA + EDTA Chelated Micronutrients for EI & PPS-Pro Aquarium Fertilization - Formulated Specially for Nature Aquariums GLA Micromix Micros is a professional-grade dry...

GLA Micros Micromix II – Shrimp-Safe Trace Mix (Copper-Free) for Nature Aquariums (Bag) Chelated Micronutrient Blend Without Copper for PPS-Pro & EI Fertilizer Dosing GLA Micros Micromix II is a professional-grade, copper-free dry...

GLA Micros Micromix II – Shrimp-Safe Trace Mix (Copper-Free) for Nature Aquariums (Jar) Chelated Micronutrient Blend Without Copper for PPS-Pro & EI Fertilizer Dosing GLA Micros Micromix II is a professional-grade, copper-free dry...

Potassium Nitrate KNO₃ – Aquarium Plant Food (1lb Bag) Provides Nitrogen (N) & Potassium (K) – Essential for Photosynthesis, Growth & Leaf Health Potassium Nitrate (KNO₃) is a high-purity macronutrient source providing essential...

Potassium Nitrate KNO₃ – Aquarium Plant Food (1lb Jar) Provides Nitrogen (N) & Potassium (K) – Essential for Photosynthesis, Growth & Leaf Health Potassium Nitrate (KNO₃) is a high-purity macronutrient source providing essential...

Monopotassium Phosphate KH₂PO₄ – Aquarium Macronutrient (1lb Bag) Provides Phosphorus (P) & Potassium (K) – Critical for Energy Transfer & Root Growth Monopotassium Phosphate (KH₂PO₄), packaged in a durable, resealable 1 lb bag,...

Monopotassium Phosphate KH₂PO₄ – Aquarium Macronutrient (1lb Bag) Provides Phosphorus (P) & Potassium (K) – Critical for Energy Transfer & Root Growth Monopotassium Phosphate (KH₂PO₄) delivers highly available phosphorus and...

GLA Potassium Sulfate (K₂SO₄) – Dry Aquarium Fertilizer (1lb Bag) Essential Potassium (K) & Sulfur (S) for Aquatic Plant Growth and Health Potassium Sulfate (K₂SO₄) is a premium dry fertilizer that delivers vital potassium and sulfur to...

Potassium Sulfate K₂SO₄ – Dry Aquarium Fertilizer (1lb Bag) Provides Potassium (K) & Sulfur (S) – Supports Leaf Development & Plant Resilience Potassium Sulfate (K₂SO₄) is a high-purity dry aquarium fertilizer that supplies essential...

Magnesium Sulfate MgSO₄ – Aquarium Plant Nutrients (1lb Bag) Provides Magnesium (Mg) & Sulfur (S) – Essential for Chlorophyll, Enzyme Function & GH Balance Magnesium Sulfate (MgSO₄) is a critical source of magnesium and...

Magnesium Sulfate MgSO₄ – Aquarium Plant Nutrients (1lb Jar) Provides Magnesium (Mg) & Sulfur (S) – Essential for Chlorophyll, Enzyme Function & GH Balance Magnesium Sulfate (MgSO₄) is a critical source of magnesium and...

GLA Calcium Sulfate – CaSO₄·2H₂O (Bag) 22.5% Calcium + 18% Sulfur – DIY GH Booster for Planted Aquariums GLA Calcium Sulfate is a high-purity dry fertilizer that provides essential calcium (Ca) and sulfur (S) for aquatic plant health...

GLA Calcium Sulfate – CaSO₄·2H₂O (Jar) 22.5% Calcium + 18% Sulfur – DIY GH Booster for Planted Aquariums GLA Calcium Sulfate is a high-purity dry fertilizer that provides essential calcium (Ca) and sulfur (S) for aquatic plant health...

The Ultimate GH Booster – Raise General Hardness (GH) in RO/DI Water (1lb Bag) Calcium & Magnesium Remineralizer for Soft or RO Water Aquariums GLA’s Ultimate GH Booster is a balanced dry mineral blend that raises general hardness (GH) in...

The Ultimate GH Booster – Raise General Hardness (GH) in RO/DI Water (1lb Jar) Calcium & Magnesium Remineralizer for Soft or RO Water Aquariums GLA’s Ultimate GH Booster is a balanced dry mineral blend that raises general hardness (GH) in...

Magnesium Nitrate Mg(NO₃)₂ – Macronutrient Fertilizer (1lb Bag) Provides Magnesium (Mg) & Nitrogen (N) – Essential for Plant Growth and Hardness Stability Magnesium Nitrate (Mg(NO₃)₂) is a high-purity macronutrient fertilizer that...

Magnesium Nitrate Mg(NO₃)₂ – Macronutrient Fertilizer (1lb Jar) Provides Magnesium (Mg) and Nitrogen (N) for Aquarium Plants Magnesium Nitrate (Mg(NO₃)₂), Macronutrient Fertilizer, provides nitrogen (N) and magnesium (Mg) to plants, and raises...

GLA Calcium Nitrate – Ca(NO₃)₂•4H₂O (Bag) 13-0-0 + 18% Calcium – Nitrate-Based Nitrogen Source for Aquarium Plants GLA Calcium Nitrate is a high-purity, ammonia-free nitrogen and calcium source for planted aquariums. Supplied as...

GLA Calcium Nitrate – Ca(NO₃)₂•4H₂O (Jar) 13-0-0 + 18% Calcium – Nitrate-Based Nitrogen Source for Aquarium Plants GLA Calcium Nitrate is a high-purity, ammonia-free nitrogen and calcium source for planted aquariums. Supplied as...

EDTA Chelated Iron (Fe 13%) – 0.5lb Bag Chelated Iron Fertilizer for Planted Aquariums – Ideal for Acidic, Soft Water This EDTA chelated iron fertilizer (Fe 13%) provides essential iron in a plant-available form, optimized for aquariums...

GLA Iron Chelate EDTA – 13% Fe (0.5lb Jar) Iron (Fe) Supplement for Planted Aquariums – Ideal for Soft, Acidic Water Conditions GLA’s EDTA Chelated Iron (13%) delivers plant-available iron for optimal growth, nutrient uptake, and...

DTPA Chelated Iron (Fe 11%) Aquarium Fertilizer – 0.5lb Bag DTPA Chelated Iron Fertilizer for Aquarium Plants 0.5lb/Bag Provides DTPA chelated Iron (Fe) to aquarium plants. Ideal for use in alkaline aquarium water with higher pH. Iron is essential...

DTPA Chelated Iron (Fe 11%) – 0.5lb Jar Chelated Iron Fertilizer for Planted Aquariums – Ideal for Higher pH or Hard Water This DTPA chelated iron fertilizer (Fe 11%) provides bioavailable iron for aquatic plants, especially in hard water or...

EDDHA Chelated Iron (Fe 6%) Aquarium Fertilizer – 0.5lb Bag EDDHA Chelated Iron Fertilizer for Aquarium Plants 0.5lb/Bag Provides EDDHA chelated Iron (Fe) to aquarium plants. Optimized for hard water and high pH aquariums where stable iron...

EDDHA Chelated Iron (Fe 6%) Aquarium Fertilizer – 0.5lb Jar EDDHA Chelated Iron Fertilizer for Aquarium Plants 0.5lb/Jar Provides EDDHA chelated Iron (Fe) to aquarium plants. Best suited for aquariums with hard water or high pH, where other iron...

DIY Fertilizer Dosing Bottles – Micros & Macros Set (500 mL) A matched set of professional-grade dosing bottles for preparing and dispensing DIY liquid aquarium fertilizers with precision and ease. Designed for aquarists who mix their own...