frequency of perimeter checkings

[Myka]

I test once a week for cal, alk, and mag. I test nitrate once a month. Nitrite and ammonia if something's amiss. My phosphate kit just collects dust. My tank is 2 1/2 years old. I have yet to use up an entire test kit before the expiration date.

[mike31154]

Perimeter? You had me thinking there for a second! I looked all around the bottom of the outside of my tank for possible leaks or salt creep. Of course after reading a few responses I realized you mean parameters. I no longer have a real set regimen, check salinity, pH, nitrates, phosphates, calcium whenever I'm about to do a water change, which is roughly every 18-21 days.

[Tangman]

Once a week for me, Sunday is my tank regiment day

[christyf5]

I check mine weekly, mostly because I'm bored and well, there they are