[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

calcium requirments?

I've noticed that I haven't seen any calcium listed in the PMDD ingrediants.
 I know most (all) of the N and P requirements will be met by my fish waste
but I live in an area with very soft water.  Should I be adding a calcium
source into my tank as well and if so, how much should I add per gallon?