[Aquarist007]

Originally posted by JB NY
I test once a month. In the beginning I tested more often but for the last few years of the tank I only tested once a month. If something was really off I might test it 48 hours later to see if things got back on track.

I dose ca/alk through a ca reactor and kalk reactor so that is done all the time. The Ca reactor is on 24/7 and all top off water goes through the kalk reactor. Mg is only added to water change water. I do that once a week.

thanks I understand that--but in my situation where I have to dose by hand--would the water parameters be stable for weekly testing or should it be done everyother day etc?