| Re: 75 gal plumbing
Ok what should I use in place of the Bio Balls?
I was pondering a closed loop with the second pump using a canister filter with carbon and filter cartrage. Any thoughts?
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75 G Dry but getting closer. 
75 G Drilled. 3 - 1" Drains 4 - 3/4" Returns
2 returns from closed loop.
2 returns from sump.
1/5 HP Chiller.
Octopus Skimmer.
10 gallon Fuge
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