50% once a week keeps my tanks like chrystal.... speakin of which i need to get off here and get mine started
I agree. If you have somewhat sensitive fish, it's better to do frequent, small water changes because they cause smaller swings in the water parameters. With my big, messy tank, the fish are all pretty big and hardy, so they get around a 60-70% change once a week cause I know they can take it and they are dirty fish. With my baby lungfish that I'm more concerned about, I do about a 15-20% change every 2-4 days or so.Ask the residents of the tank- they like minimal changes. WC involving lower percentage of replenishment done more frequently is better than WCs with higher percentage done farther apart.
when?
...how much water should be removed?
Any other tips will be great!