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Old 09-30-2013, 06:19 PM
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Quote:
Originally Posted by Proteus View Post
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
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
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