Description
GLA GH & KH Booster Kit – Nature Aquarium RO/DI Water Remineralization (Jars)
Adjust General Hardness & Alkalinity Separately
The GLA GH + KH Booster Kit pairs two aquarium supplements for preparing RO/DI water or adjusting soft water in planted and freshwater aquariums. GH Booster supplies calcium and magnesium to raise general hardness, while KH Booster supplies potassium bicarbonate to raise carbonate hardness and increase alkalinity.
Packaged in separate jars, each product can be measured independently to match your aquarium’s needs. This kit is ideal for aquariums that require both GH and KH supplementation.
What Each Booster Does
- GH Booster: Supplies calcium, magnesium, and sulfur in sulfate form. Raises general hardness (GH) without adding carbonate hardness (KH).
- KH Booster: Raises carbonate hardness (KH) and increases buffering capacity to help resist drops in pH. Also supplies potassium without increasing GH.
Dosing & Instructions
- GH Booster: Add 4.2 g per 10 US gallons of RO/DI water to raise GH by approximately 3 dGH.
- KH Booster: Add 1.35 g per 10 US gallons of RO/DI water to raise KH by approximately 1 dKH.
Dose each product independently according to your desired GH and KH increases. The amounts above are reference doses, not a required dosing ratio.
Measure by weight using a gram scale. Add each product separately to replacement water with thorough stirring or circulation, allowing time for the minerals to dissolve. Calcium sulfate in GH Booster dissolves more slowly than the other ingredients.
Test GH, KH, and pH before use. For water changes, calculate doses using the volume of replacement water and account for any existing hardness or alkalinity. Choose targets appropriate for your fish, shrimp, and plants, and avoid sudden changes in established aquariums.
Potassium Contribution & pH
Each approximately 1 dKH increase from KH Booster contributes about 14 ppm potassium. Account for this contribution when using other potassium-containing fertilizers, especially when making larger KH adjustments.
Increasing KH can raise pH, but KH Booster does not set or maintain a specific pH value. For aquariums intentionally maintained at very low KH, use GH Booster as needed and add KH Booster only if your target parameters require it.
Includes
- GLA GH Booster — 1 lb jar
- GLA KH Booster — 1 lb jar
GH Booster Guaranteed Analysis
- Magnesium (Mg): 4.85%
- Water-Soluble Magnesium (Mg): 4.85%
- Calcium (Ca): 11.25%
- Sulfur (S): 15.4%
Derived From: Magnesium Sulfate Heptahydrate and Calcium Sulfate Dihydrate (Gypsum).
KH Booster Guaranteed Analysis
- Soluble Potash (K2O): 45.7%
- Potassium (K): 38%
Soluble potash and elemental potassium express the same potassium content in different forms; they are not separate nutrient amounts to add together.
Derived From: Potassium Bicarbonate (CAS 298-14-6).
Explore aquarium dosing guidance and calculators:
greenleafaquariums.com/ferts
Customer Reviews
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Very good system
So glad to have found this by recommendation from a Facebook group. I like that it’s also a ?? US made product. It doesn’t get any easier at remineralizing your RO water. I stopped measuring my GH and KH now after several uses because it’s eats spot on every time I use it.
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Truly the best option for GH and KH mineralization,
I keep a few tanks both shrimp tanks and a soft water tank with more rare stem plants. I’ve used APT Sky and it really never did anything for KH, on top of that it’s quite the rip off compared to GLA’s kit here. Total game changer for my tanks. I checked with Google Gemini and it completely agrees that GLA was a better purchase. See for yourself it’s a no brainer.
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Best remineralize I’ve used for my tanks.
I’ve always used GLA GH Booster for years because it’s always perfect everytime and very well priced. Just a week ago I see they have this new KH Booster and was very surprised. I use to use another product for my KH but results were never registering a reading. My first day mineralizing my RO holding tank and I could not bromide it. Raised my KH 1* with absolute accuracy with one dose. Really loving the potassium it adds to boost things so color me extremely happy with this kit. Well done GLA on another great product for us hobbyist.
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Best system available blows APT products away.
If your looking for an economical high grade way to treat your RO water this is it hands down. I’m a firm believer in GLA product line now that I’m using their whole fertilizer system. Educate yourself before you buy into APT because that stuff isn’t worth the packaging it comes in. This is the way to go.
