Combining two canisters in a single tank? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 05-20-2018, 07:51 PM Thread Starter
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Combining two canisters in a single tank?

Is there a way to plumb the inputs/returns so that there is less clutter in the tank, without creating any problems?


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post #2 of 6 (permalink) Old 05-20-2018, 07:59 PM
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You probably could with T fittings. I wouldnt do it on input, just output.
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post #3 of 6 (permalink) Old 05-20-2018, 08:02 PM
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I would think you could. One intake and one output should be all you need.
Calculating out the proper sizing might be a bit more time consuming. Lets say you have 2 identical canister filters. Each is rated at 300 gph and are using 5/8" hoses.
Your newly designed intake will need to be big enough to comfortable flow 600 gph. While we are on the intake side - its nice/comforting to have 2 filters but with only one intake you could still run into a problem of the one intake getting plugged up with debris. Would it completely shut down both filters before you notice it - probably not.

Anyway, your bigger intake pipe would then need some type of Y on the outside end of it where you would hook up your 5/8" hoses.

The return side would be pretty much the same thing. Both filters running into a Y, then a bigger pipe going into your tank.


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post #4 of 6 (permalink) Old 05-21-2018, 01:20 PM
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I would think that if the tank is large enough to warrant 2 filters it would be beneficial to have the returns at opposite ends of the tank for better circulation. What size tank?

75g that has rolled through various incarnations over the years...
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post #5 of 6 (permalink) Old 05-21-2018, 01:25 PM
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Yea, I can't see a single output doing a good enough job an larger tanks in terms of flow / circulation.

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post #6 of 6 (permalink) Old 05-21-2018, 02:51 PM
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I had 2 intakes to a single spraybar (at both ends), all at the back wall, but that does not really help with clutter. I now just plant tall stems in front of intakes and use both returns.
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