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Old 09-29-2013, 04:30 PM   #1 
Blue Fish
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Join Date: Jun 2012
Location: East Tennessee
Goldfish filter questions

Another goldfish question. :)

Okay, I've posted a few other times with goldie questions, and I've gotten some fantastic information, so thanks SO much to everyone for their help thus far!

Before I start, I have not yet purchased anything, and probably won't for awhile. But I am very appreciative of all the information that I'm getting so that I can make the right purchases the *first* time. Hence my asking. :)

I've got another question though. So, I've decided to go on ahead and get a *BIG* tank, like 90g+, with the stand and hood and all that. Stocked with five goldfish, a few fast-growing live plants (more for décor than for water quality since I know the goldies will often eat them), and a big, big, powerful filter.

It sounds to me like a canister filter, possibly two, will be what I need. So, my next question...I know the typical rule for goldfish is 10x the filtration for the gallon size of the tank. That's going to be 900 gallons per hour. So, if I was to get two canister filters that pumped 500 gallons/hour, would this work? Does using two smaller pumps work as well as one huge pump?

It seemed like that would be an acceptable measure, but I wasn't sure if the water would really all get circulated with that method?

Also, straight canister vs wet-dry...what's the difference, and does one work better than the other?

I want to make sure these guys are healthy and have enough space to be happy.
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Old 09-29-2013, 05:16 PM   #2 
Join Date: Jul 2013
Location: Sarasota Fl
Two Cans or a Can and a HOB like a AC110 or two AC110 could all work.

A wet and dry is a sump setup

They do equally good jobs

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Old 09-29-2013, 06:59 PM   #3 
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Join Date: Mar 2013
Location: Oklahoma
Two canister filters should be as effective as a single larger one. The benefit of multiple filters is multiple water outputs, which helps with circulation.
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Old 09-29-2013, 07:03 PM   #4 
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Join Date: Dec 2009
Location: Brigantine, NJ
You are right to go big on filtration. I think 2 are better than 1.
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Old 09-29-2013, 07:17 PM   #5 
Join Date: Jul 2013
Location: Sarasota Fl
One advantage of two over one is you can stagger the maintenance on the filter.

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