Thread: phosphate removal media...school me
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Old 07-12-2013, 05:18 AM
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Quote:
Originally Posted by Acrowhora View Post
i change mine every 30 days
I do the same
My Carbon and GFO are on a 2 weeks-apart schedule so I get a break, and I don't change either close to each other

BRS has a calculator you might find useful
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