Description
GLA Glass Orb CO2 Drop Checker Kit for Planted Aquarium
The GLA Glass Orb CO2 Drop Checker Kit provides a simple and reliable way to visually monitor CO2 levels in planted aquariums.
Designed with a clean glass orb shape that blends naturally into modern aquascapes, this drop checker helps maintain stable CO2 levels for healthy aquatic plant growth while remaining unobtrusive inside the aquarium.
This complete kit includes a ready-to-use 4° dKH CO2 indicator solution, allowing quick setup without the need for mixing or additional reagents.
Features
- Complete Ready-to-Use Kit – Includes drop checker, suction cup, and pre-mixed indicator solution
- 4° dKH Indicator Solution Included – Designed for accurate planted aquarium CO2 monitoring
- Glass Orb Design – Clean, minimalist appearance for planted aquarium layouts
- Visual CO2 Monitoring – Easily observe aquarium CO2 levels through color indication
- Simple Installation – Includes suction cup for secure aquarium mounting
CO2 Color Guide
- Blue: Low CO2 level – increase CO2 injection
- Green: Approximate optimal CO2 level (~30ppm)
- Yellow: Elevated CO2 level – decrease CO2 injection
How to Use
- Rinse the drop checker prior to use.
- Fill with the included CO2 indicator solution.
- Install inside the aquarium using the included suction cup.
- Allow approximately 2–3 hours for the solution color to respond to aquarium CO2 levels.
Package Includes
- GLA Glass Orb CO2 Drop Checker
- Suction Cup Mount
- 2oz Ready-to-Use CO2 Indicator Solution
The GLA Glass Orb CO2 Drop Checker Kit offers a clean and reliable solution for monitoring planted aquarium CO2 levels while complementing modern aquascape layouts.
Customer Reviews
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GLASS ORB CO2 DROP CHECKER
Love it! Nice shape and perfect size - Easy to read for results! Really recommend this drop checker!
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it works
This is the only drop checker I've ever tried so far. It seems to be working.
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Excellent quality
Very happy with this item great quality
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I’ve used many drop checkers and this one tests the most accurate.
I’ve used many drop checkers over the years and even own a couple coveted Cal Aqua Labs drop checkers. Saddened by the loss of them I purchased two of aGLA’s Orb checkers. I’ve tested many drop checkers over the decade and my co2 meter shows this to be the most accurate. The reagent is spot on and very easy to read. This is a high quality product from GLA, as expected.
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Actually works!
I have quite a number of drpo checkers, including Cal Aqua labs and ADA. Its sad to see Cal Aqua Labs close last year but was happy to see GLA and filling in the gap. This glass drop checker and every glass unit for what I know will work the same, its the reagent that is what matters. GLA makes one spectacular 4DKH reagent that I compared with a Hach Co2 test kit and it was on the money! This is worth every penny.
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Best of the best. High quality kit.
Needed new drop checker and this one is new to me, but Im not novice to how they work. This one works extremely well. It ha s a large orifice for easy filling and GLA Lab 4DKH solution vs the garbage stuff others provide.
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Finally a drop checker that works like it should!
Best DC Ive used to date. Very nice!
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Bets drop checker Ive used.
I have a few different drop checkers Ive used and so far this is the most reliable. In comparison with a pH test Ive ran this drop checker, which I suspect has everything to do with the solution GLA provides is the most accurate. Ive also compared it to a Hack Co2 test kit, it was spot on. Thanks GLA for making a real working drop checker I can easily rely on.
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It’s perfect.
Quality glassware and 4DKH is on point. Really impressed.
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Best drop checker you’ll find.
I was pretty tired of buying drop checkers that came with wack fluid all the time. This new GLA Orb has been nice. Came with a big bottle of 4DKh and a pipette thingy. Very accurate readings everyday and easy to use vs the long thin neck type. Good deal here.
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Best real working drop checker I’ve used.
I feel the vital component to a good drop checker is the fluid they provide. This new GLA Orb has some very good 4DKh fluid. It’s premixed unlike the bottle they sell separately. If you’ve used drop checkers before you know what a pain it can be to get good color rendering from the 4DKh. This stuff is nothing short of perfect. It works fast and the color rendering is super easy to confirm. Overall great working combo here with the big bottle of 4DKh and pipette thingy. GLA knocks it out once again,
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I am happy with my Glass Orb Drop Checker
I just purchased my 2nd of these drop checkers. Easy to read. Attractive looking. I would like clearer instructions on adding the chemicals (4dKH and the liquid that comes with the drop checker) on the website (perhaps it is there and I missed it). GLA customer support is very good.
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High quality drop checker.
Very happy with GLA products. You do need the 4DKH to go with this, but it does come with a huge bottle of reagent to mix so that is a big bonus.
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Its perfect
Using this in conjunction with GLA 4DKH and its been super reliable. Zero complaints.
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New GLA drop checker is perfect!
I was ordering more 4dkh when I saw GLA had this gem. Super cost effective guys! This I like a lot due to its price and simplicity to use. Everybody knows how difficult it is to fill a drop checker. Not with this guy!
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It works perfect with GLA 4DKH
Very happy. I use this with GLA 4DKH and my API ph test reagent to mix and its been the best performing drop checker for me. Both in color and speed. I do think GLA 4DKH is the very best because I have used many others but this is super high quality and very accurate.
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These are awesome.
I ordered two of these and both really nice. I wasn't expecting much because of the price but boy are they nice and big. You will need 4DKH and ph reagent to create a solution. I use my API ph test kit works great.
