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Old 11-24-2012, 01:57 PM   #1
jester56
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Suggestions for Circulation Pump


I need to supplement my 50 gallon planted tank with a circulation pump. There's lots of high rated ones available. I need to know what the GPH should be on one to supplement a 390 GPH canister with a 12 inch spray bar. Need to cover about half of the tank. DO have fish (11).

Any help would be appreciated! Thanks!

Jes
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Old 11-24-2012, 02:04 PM   #2
HD Blazingwolf
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Koralia nano 425 should probably do te trick nicely
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Old 11-24-2012, 07:39 PM   #3
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thanks!
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Old 11-25-2012, 01:08 PM   #4
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Quote:
Originally Posted by HD Blazingwolf View Post
Koralia nano 425 should probably do te trick nicely
I have a 1600GPH JBJ circulation pump on my 75G.

I am thinking about switching to two 425 Koralia's on either side.

Thoughts?
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Old 11-26-2012, 02:40 PM   #5
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I went ahead and ordered a Koralia 425 from Amazon.com. Looking forward to seeing how my tetras will react. They "fight" against the spray bar now!

Don't know enough to give you a decent answer, Ronald. But it seems like two would give you a much better distribution without the force that the 1600 puts out...

I'll post back here when I get mine and put it in the tank.
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Old 11-26-2012, 02:46 PM   #6
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Quote:
Originally Posted by jester56 View Post
I went ahead and ordered a Koralia 425 from Amazon.com. Looking forward to seeing how my tetras will react. They "fight" against the spray bar now!

Don't know enough to give you a decent answer, Ronald. But it seems like two would give you a much better distribution without the force that the 1600 puts out...

I'll post back here when I get mine and put it in the tank.
Thanks, post pics too please. People say they are about as small as an egg.
I have Cardinals in my tank now, don't want them to stress about the current too much.

The 1600 GPH one I have now is really diffused so there is not a lot of direct current which is nice.

If the Koralias are smaller, I could put them in the back two corners, this would have a much cleaner look in my tank.
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Old 11-26-2012, 02:50 PM   #7
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Will do! Should be here Wednesday... And I've got black longfin tetras to test it out...
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Old 11-26-2012, 03:56 PM   #8
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You'll love the Koralia 425s, I have 2 in my 125g tank. They are at opposite corners, one near the top, the other near the bottom (both about 1/4 from the top or bottom). This way I get a gentle circular current that flows from top to bottom, diagonally across the tank.
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Old 11-26-2012, 04:50 PM   #9
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Quote:
Originally Posted by driftwoodhunter View Post
You'll love the Koralia 425s, I have 2 in my 125g tank. They are at opposite corners, one near the top, the other near the bottom (both about 1/4 from the top or bottom). This way I get a gentle circular current that flows from top to bottom, diagonally across the tank.
Can you throw up some pics? This is exactly what I want to do for my 75G.
Do you think two of the 425's are too much for my 75G? I have 2x Eheim 2217's for flow currently.
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Old 11-27-2012, 04:47 AM   #10
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I hope two won't be too much for a 75, I'm going to use two on a 55 and two more on either another 55 or a 90. I know it will be fine on a 90 - the flow is gentle so I think it's good for a 55 and a 75 too. I will take some pics tonight & post them tomorrow after work (11pm). I'll try to add a video so you can see how much they move the plants...
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Old 11-27-2012, 05:21 AM   #11
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a full shot of the tank = 6 feet long. One Koralia is in the upper right rear corner, one is in the mid front left side (hidden by a Hamburg Mattenfilter).

http://s1352.beta.photobucket.com/us...tml?sort=3&o=2

The right corner;

http://s1352.beta.photobucket.com/us...tml?sort=3&o=3

the left one in the Mattenfilter, can't see it because it's behind the java fern.

http://s1352.beta.photobucket.com/us...tml?sort=3&o=1

and a bad, shaky video of the whole thing, you can see the plants (vals on the right, java fern on the left) move, but the fish aren't fazed at all.

http://s1352.beta.photobucket.com/us...tml?sort=3&o=4
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Old 11-27-2012, 10:52 AM   #12
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Very nice! Thanks for uploading the pictures!
I will def. be replacing my 1600GPH with two of these.

It will be much cleaner looking than this:
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Old 11-27-2012, 02:56 PM   #13
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You're welcome! What's nice is that I can drop flake food in front of the Koralia in the Mattenfilter and watch it (if it doesn't get eaten first!) travel the full length of the front glass, around the corner towards the opposite Koralia, then get pushed by the second Koralia back towards the Mattenfilter (by then it's eaten). So I know I have the circular current I wanted & it works...and they are totally silent, too.
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Old 11-27-2012, 03:18 PM   #14
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Nice tank and fish!
That seems to be a good amount of current.
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Old 11-27-2012, 03:29 PM   #15
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I guess you mean me, since I don't see any other pics except for the close-up? lol. My tank is so bare of plants still, I'm not comfortable showing full tank shots yet ; )

I never heard of the Koralias until I started following sewingalot's thread on Hamburg Mattenfilters (I had never heard of them, before, either). The 425 size was recommended to me for my tank because the rate of flow needs to be just so (and low) for the Poret foam to do it's thing. Now I am so addicted to the 425 that I ordered 5 more on Black Friday to use in other tanks. I think they are great...often the smaller fish - the Harlequins, Black Neons - will hover inches from one pump and swim facing the flow. On the other end, the Buenos Aires tetras will do the same. They seem to enjoy the flow and it's not too strong for them.
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