Daily Water Changes

[Brent F]

Originally Posted by rocketlily

My question is, that for a 20 gal nano tank, when you should be changing 2-3gal per week, would it be better for the tank (in a perfect world) if I changed a litre per day. This also brings me to my second question. I am using Red Sea Coral Pro salt for RO water. How big of a batch of water can I mix and how long can it sit before using. Can I mix 3 gals. in a pail, cover it and use it all week for daily changes?

Small frequent changes are better for maintaining a constant water quality. But, if the changes get too small of a volume it gets difficult to suck up the crap with the water - you might not be able to vacuum up the debris in you tank if only siphoning out a litre at a time.
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