Kalk $ calcium reactors?

[stephane]

you wil have to refil the reactor each two week aprox. each tank is different in depletion rate and each time you add a coral you depletion will change so you need to find it you self with the help of the PH alkalinity test and calcium but mostly PH only will tell you when you will be more familiar with the reactor and you tank reaction

you absolutly need a PH meter if you go with kalkwaser cause it will be the best and easy way to adjust your reactor you aslo need a dripper or
an automatic top off that will add water slowly and not a gallon each time he start