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apistaeasy · 12-03-2008, 03:09 PM

With fresh water 50% WC weekly is usually the frequency and amount of choice.

Some people do 50% WC daily, but it's usually b/c they're trying to breed Discus, which require very clean water (read, low nitrates)

50% also seems to be the happy amount where your tank is nice and clean, but keeps enough of the good bacteria so your tank doesn't suffer in the end.

I've also read where many planted tank people will do smaller WC's daily, but I personally don't see the benefit. 30-40% daily is what I've heard.

12-03-2008, 03:09 PM	#3 (permalink)
apistaeasy Senior Member Join Date: Jul 2004 Location: SLC, UT Posts: 483 iTrader Ratings: 61 iTrader Positive Rating: 100% Plant Points: 43900	Re: Are Frequent Water Changes Harmful ? With fresh water 50% WC weekly is usually the frequency and amount of choice. Some people do 50% WC daily, but it's usually b/c they're trying to breed Discus, which require very clean water (read, low nitrates) 50% also seems to be the happy amount where your tank is nice and clean, but keeps enough of the good bacteria so your tank doesn't suffer in the end. I've also read where many planted tank people will do smaller WC's daily, but I personally don't see the benefit. 30-40% daily is what I've heard.