Quote:
Originally Posted by Proteus
I do a 5 gal wc every 3 days on a 42g system. Works great. I would prefer it over a 20g every two weeks which would have higher swings
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But why so often? I'm sure you could do a 5 gallon once a week and it would be fine
I have auto water changes setup now and I still only do about 40 gallons every 2 weeks. But I introduce the new water over 3-4 days