And while alk/calc/mag are “the holy trinity” of testing. I think phos and nitrate testing has far more impact. I’ve had much more issues with those levels causing major tank issues.
I hate to say it - I don't test that often -I'm not lazy - its just that if everything looks 'good' and is growing - whats the point. That said - I do test more often if I add (or take away) coral, etc. I haven't tested nitrate or PO4 for at least 3 months (but am going to today)
