Reef Chronicles

You test, you write it down, and six months later you still cannot say how much your tank uses in a day. That is the number this works out. It compares what you have dosed against how much the number actually moved, and gives you the daily amount that would hold alkalinity steady. Same for calcium, magnesium and the rest. Everything else is a logbook that stays out of the way. LOGGING 22 parameters. Backdate a test you forgot to enter. "Same as last time" for the ones that never move. A full round takes under a minute, one-handed. DOSING Enter where you are and where you want to be. You get grams or millilitres for your volume and your product, with the arithmetic shown. No conversions on the back of an envelope. It will not give you the whole correction in one go. Alkalinity moving more than 1.4 dKH in a day is how people burn tips off Acropora, so the number is capped whether you like…