There's always testing to be done. One of the 3 tanks is getting tested several times per week, but that's because I'm going all in wall-to-wall sps on the rockwork. Nitrates and phosphates are 0 unless I intervene and dose, which is how I prefer to run this kind of tank. I have my filter roller to thank for that. I haven't done a water change in about a month and a half or longer. Icp test incoming.
The other 2 are rarely tested. One is a fowlr that I do 40% water changes when the glass needs to be cleaned off too often or there's too much detritus. My other tank is my first saltwater tank I set up 3.5 years ago. I tested the salinity, alk and nitrates for the first time in months recently and it's still doing fine. In fact, I ran out of 2 part for who knows how long and I didn't see it lose a beat. There's no sump or any other nutrient export method, so water changes are my only way to lower nutrients. Nitrates were at 11 after a couple of months with 1 water change. I feed heavily, so that's just what mature tanks do. I mean, my scraper got disconnected from the magnet and has been wedged between 2 rocks for the last couple of weeks. The panels were getting pretty nasty there, but of course magically the algae is going away in it's own. I regularly have my clowns and trochus snails spawn in the tank. After awhile, you don't need to do anything. I let the corals fight for space. It's as close to real reef warfare as it gets (minus coral eating fish, but not aefw;Vomit)
