Circulation Pump for 55 Gal Tank - The Planted Tank Forum
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post #1 of 19 (permalink) Old 03-03-2013, 09:41 AM Thread Starter
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Circulation Pump for 55 Gal Tank

I need help choosing a Circulation Pump for a 55 gallon tank. It have terta and guppies in it and also cherry and ghost shrimp. This is planted tank. Thinking about getting two Hydor Koralia 425.
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post #2 of 19 (permalink) Old 03-03-2013, 02:54 PM
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I have one koralia 425 on my 29 along with the sunsun 302canister. WWorks great for me. The koralia flow is nice. Not a jet. I bet that would work well for you.

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post #3 of 19 (permalink) Old 03-03-2013, 03:16 PM
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I have 2 of the Koralia Nano 240s (one one each end) along with my Eheim ecco 2236.

To me, the flow is perfect. The plants sway gently and I get good flow in all corners of my tank.
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post #4 of 19 (permalink) Old 03-03-2013, 03:55 PM
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Won't the open grid of the circulation pumps pose a danger to the shrimp?
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post #5 of 19 (permalink) Old 03-03-2013, 04:14 PM
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Originally Posted by longgonedaddy View Post
Won't the open grid of the circulation pumps pose a danger to the shrimp?
I would think only for the tiniest babies. With my Korlias, the propeller is pretty small. I would think that it would be at least a 50/50 chance of them not even hitting the propeller. Not sure if the 400 GPH has a bigger propeller, but I would imagine it would. The outside of the pump is the same size, so it should be bigger.
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post #6 of 19 (permalink) Old 03-03-2013, 04:45 PM
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Originally Posted by BriDroid View Post
I would think only for the tiniest babies. With my Korlias, the propeller is pretty small. I would think that it would be at least a 50/50 chance of them not even hitting the propeller. Not sure if the 400 GPH has a bigger propeller, but I would imagine it would. The outside of the pump is the same size, so it should be bigger.


Thanks for the info. I have a small powerhead in my shrimp tank, and I use various bits of filter or cloth over the intake with a rubber band to hold. I wanted to use a circulation pump, but like I posted, I thought the prop would be a death trap. It certainly looks more elegant than what I'm using now.
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post #7 of 19 (permalink) Old 03-03-2013, 07:34 PM
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Hey what light do you have on your 55 it looks nice. I've been trying to figure out a light for mine.
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post #8 of 19 (permalink) Old 03-04-2013, 12:46 AM Thread Starter
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Hey what light do you have on your 55 it looks nice. I've been trying to figure out a light for mine.
That is the Finnex Ray 2 DD.

Is it better to get 2 strong pump and place it in the middle of the tank instead of at the end of the tank?
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post #9 of 19 (permalink) Old 03-09-2013, 08:14 AM Thread Starter
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Some more input? And also would a Hydor Koralia Evolution 550 be too strong for the plants and fishes?
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post #10 of 19 (permalink) Old 03-09-2013, 08:31 AM
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Guess it depends on what you have for water movement via you current filtration. I run two cansters on my tank and a koralia evo 550 would be too much on my tank. If you are only runnng a single canister with low flow like an Eheim, it could work.

Edit: i notice you have a fluval. Which model? With your large plants, the additional circulation pump would be a good idea.
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post #11 of 19 (permalink) Old 03-09-2013, 08:40 AM Thread Starter
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Opps without to mention that. I using a marineland 220 canister. The flow is ok about half the tank.
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post #12 of 19 (permalink) Old 03-09-2013, 05:33 PM
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I'd go with two Koralia 240s on opposing corners of the tank. I had a 425 on my 50g and the flow was too much for my liking (combined with my 2217 output). I added a 240 and another 2213 and things are just right.
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post #13 of 19 (permalink) Old 03-10-2013, 05:16 PM Thread Starter
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Originally Posted by TwoTacoCombo View Post
I'd go with two Koralia 240s on opposing corners of the tank. I had a 425 on my 50g and the flow was too much for my liking (combined with my 2217 output). I added a 240 and another 2213 and things are just right.
So you are running two filters on your tank??
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post #14 of 19 (permalink) Old 03-10-2013, 05:27 PM
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So you are running two filters on your tank??
Yes, a 2217 stuffed with coarse pads and a hydor heater, and a 2213 stuffed with floss and purigen pushing through a co2 reactor. The 2213 adds very little flow in a tank this size. The 2217 and 240 do most of the water moving.
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post #15 of 19 (permalink) Old 03-14-2013, 08:26 AM Thread Starter
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Any more input from people that have a 55 gal tank??
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