In Stock

The Ultimate GH Booster - Raise GH of RO Water - 1lb Jar

5 reviews Write a Review
Current Stock:

Frequently Bought Together:

The Ultimate GH Booster - Raise GH of RO Water - 1lb Jar
Inc. Sales Tax (Florida Only)
Ex. Sales Tax (Florida Only)


Ultimate GH Booster - K, Mg, Ca, and S to Raise GH of Soft Water

  • 1lb/Jar
  • provides Potassium (K), Magnesium (Mg), Calcium (Ca), and Sulfur (S) to aquarium plants, essential macronutrients.
  • Our Ultimate GH Booster will raise GH of RO water, stabilize aquarium pH, and provide essential minerals to your aquarium plants.
  • use to raise general hardness (GH) in soft water or RO (reverse osmosis) water

Deficiency Symptoms: chlorosis, necrosis, distorted or curling leaves, stunted plant and root growth

Guaranteed Analysis:

  • Soluble Potash (K2O) - 22.3%
  • Calcium (Ca) - 9.64%
  • Magnesium (Mg) - 1.42%
  • Sulfur (S) - 17.29%

How to dose GH Booster in your planted aquarium

To raise GH by approximately 1 meq/L (3dH/dGH), add 16g (1 tbsp) per every 80L (20 gal) of RO or DI aquarium water, upon tank install or after water change. Target GH varies per tank, in general target GH is 1-2 meq/L (3-6 dH). A GH KH test kit should be used to verify the actual result achieved.

Your addition of 16 g (equivalent to approximately 3 tsp or 1 tbsp ) GLA GH Booster to your 20gal aquarium adds:

  • Ca 13 - 17ppm
  • Mg 5 - 7ppm
  • K 26 - 32ppm
  • S 29 - 35ppm
  • dGH 3 - 4

NOTE: The above values assume you are using distilled or RO water.

Customer Reviews

5 reviews

  • 5

    Good way to mineralize RO-DI water

    Posted by Alec on 16th Apr 2023

    Most cost effective method I have found. My discus and plants are happy with the recommended dosage.

  • 5


    Posted by Don on 20th Jan 2023

    I don't know about the "ultimate". But, it does exactly what I need it to do. It's consistent and it's available. 3 days after my order it shows up on my doorstep, packaged well (with a couple items I can't tell the W...hgoghmf about).

  • 5

    Works fantastic

    Posted by Brody Davenport on 6th Feb 2022

    Cant complain at all. It’s always consistent from GLA, I’ve been using this for 15 years and it’s always great

  • 5

    Best RO remineralizer.

    Posted by Frank Madani on 30th Jul 2021

    I’ve been using GLA GH Booster for over a decade. I’ve used it for both my freshwater and reef tank. It’s always on point when I check my TDS or GH without fault. I love the new jar as well, makes it incredibly easy to dose and no mess. Love ❤️ it!

  • 5

    Excellent product worked great for my RO water.

    Posted by Devron Lee on 9th May 2021

    I was using liquid based GH additives prior but that did not seem cost effective for my 200g tank. I started using GLA GH Booster and my tank is totally stable. I add this to my RO water holding tank that houses a heater as well. The water is constantly circulated to ensure perfect mixing. The easy to use jar makes dosing a breeze and keeps everything dry.

Join the List