Testing water

[Sharkbait-huhaha]

Nada, don't check for squat. Only time I check something is when I do salinity check.

I believe in keeping good husbandry goes a long way - also I don't have any really high demanding corals.

Clean skimmer and swap out filter socks every 3-4 days
10% water change weekly
30% water change every 6th week
Zeovit additives routinely

I too keep an eye on the fish and corals. If all looks fat, happy and plump. I let it be.