I have a 10 gallon with the fishies listed below,
(+ one male crown betta) which has no rock in it, just glass beads. I picked up some aquarium rock yesterday, but I don't know how to put it in, since I will have to remove all fish ect. and I was told to never do 100% water changes
. I thought maybe I could save half of the old water in a bucket, while I was cleaning it, then return it when I was done so It would only be a 50% water change
..is this acceptable?


