Input your species and remineralizer brand. Get the exact dose to hit your target GH, KH, and TDS — every water change, every time.
See It In Action
Reference calculator — always test your water before adding to tank.
Features
Exact grams (or ml) per brand per volume. Supports powder and liquid remineralizers. Free.
Predict post-change GH and TDS. Molt risk warning when parameter swing exceeds safe limits. (Pro)
TDS creeping up from evaporation? Calculate exactly how much pure RO to top off. (Pro)
Mix tap and RO water to hit your target GH without over-remineralizing. (Pro)
Track GH, KH, and TDS over time. Spot drift before it stresses your colony. (Pro)
No account, no cloud, no internet required. All tank data stored locally on device.
Supported Species
Supported Brands
How It Works
Choose from Neocaridina, Caridina, Taiwan Bee, Sulawesi, Amano, or Ghost shrimp
Select Salty Shrimp, SL-Aqua, or enter your own custom remineralizer specs
ShrimpCalc gives you the exact grams or ml — with expected GH, KH, and TDS