Our tank is 55g.
I only vacuum the tank (very lightly if so) if there is a build up of dirt/detritus due to lack of proper flow or critter clean up to an area (clean up crew i.e. nassarius snails usually take care of that stuff)
This means it is very rare for me to do so.
For example, someone grossly overfed the fish last friday and there were tons of freeze dried krill hanging out in the tank by time I was able to clean it out.
In addition to netting it out, since i
saw a bunch laying at the bottom, I decided to do a vacuum clean.
First one in a year!
I only do water changes every few months, and take about 5g out.
I usually just replace what has evaporated.
The tank only houses fish, snails, macro and live rock. In the past with the same methods, we had softies and LPS. They did well until the lights went out for a week
