Calculate true system volume after substrate, live rock, and equipment displacement. The number you should be dosing against - not the number on the box.
Open calculator → Alkalinity dosing calculatorHit your target dKH without overshooting. Supports BRS 2-part, Red Sea Reef Foundation, ESV B-Ionic, kalkwasser, and soda ash.
Open calculator → Salt mixing calculatorExact salt grams for your target specific gravity. Accounts for the major reef-grade brands - Instant Ocean, Red Sea, Tropic Marin, Fritz.
Open calculator → Stocking density calculatorAre you overstocked? Bioload-based stocking calculation that beats the "one inch per gallon" myth.
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