How often do you test your water?

[whatcaneyedo]

Salinity and Alkalinity weekly because they can fluctuate in my tank if I'm not careful, Calcium and Magnesium Monthly since they're extremely stable. I used to test Nitrate and Phosphate but I haven't received any colour from the kits in years.

[Myka]

When my tank was developing it was consuming more and more calcium, alkalinity, and magnesium so I was testing weekly and adjusting dosers every few weeks. Now my tank is coming up to its third birthday it has settled down, so I'm only testing the big three once every 2-4 weeks and I haven't had to adjust the dosers in at least a couple months now.

Of the other parameters; I test salinity once a week before I do a waterchange, potassium once a month or so, nitrate and phosphate once every 3-6 months. I have a digital pH meter that I use mainly on my quarantine tank and I will test the reef occasionally out of interest, but it is never interesting (which is good haha). Same deal with the ammonia kit as the pH meter - mostly for the QT. I test the TDS of the RODI water every time I use it (once a week).

I haven't voted yet, not sure which one I should vote for...?

[Nanoized]

Testing went the way of the dodo bird a couple years back for me.
25% water changes every week with D&D salt my nano is looks great and with no loss of life.