Ok. I have zero plants in mine (can you get freshwater plants for your aquarium? My LFS doesn't carry them). I can do half and half. Is a 25% water change bad for a 22 gallon tank?It is possible.. because sucking up all the bacteria along the bottom floor depletes the tank of the bacteria necessary to break down waste and debris. I never vaccuum my gravel, but it is because I have a lot of plants, and I use the waste and debris for nutrients.
Try vacuuming half a tank, and on your next cleaning, vacuum the other half.
my 10g I just tore down had been runing for 8 years.I ask because I vacuumed the gravel and did about a 25% water change Saturday and now my water is a little cloudy. I was going to vacuum it again this Saturday as well. How often do you guys clean your tanks?