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Old 05-25-2014, 07:33 AM   #1
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Maxijet 400 sump pump?

I have a 20 gallon reef with a 10 gallon sump that sits directly behind the display and just installed a maxijet 400. My question is will this be enough flow though my sump with roughly 6 inches of head pressure.

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Old 05-25-2014, 10:02 AM   #2
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No way. You are going to want more flow than that. How does the 20 drain into the 10?
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Old 05-25-2014, 09:18 PM   #3
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No way. You are going to want more flow than that. How does the 20 drain into the 10?
I've heard that 3-5 times return is ideal. I'm getting 80 gph. Was I misinformed? The 20 drains into sump through a one inch bulkhead with a 90 degree elbow attached.

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Old 05-26-2014, 09:32 AM   #4
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There is no ideal return pressure really. You want at least enough flow to keep your sump from having areas of standing water and also enough to feed your reactors, media, and/or algae. If this mj400 is doing that, then I suppose it will work, but I feel like that sump is going to be barely moving.
In other words, if you decide on a skimmer that has a 300 gph pump on it, you want a return that's at least 300 gph after head loss in order for it to work at full efficiency.
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Old 05-26-2014, 11:26 AM   #5
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The only info I could find on my skimmer said 55 gph. It's an aquaticlife 115

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Old 05-26-2014, 09:49 PM   #6
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There is no ideal return pressure really. You want at least enough flow to keep your sump from having areas of standing water and also enough to feed your reactors, media, and/or algae. If this mj400 is doing that, then I suppose it will work, but I feel like that sump is going to be barely moving.
In other words, if you decide on a skimmer that has a 300 gph pump on it, you want a return that's at least 300 gph after head loss in order for it to work at full efficiency.
I tried a mj900 before but with the strainer on the 90 degree elbow attached to a 1 inch bulkhead it was pushing to much water for the drain to handle. It'll work without the strainer but I don't want any fish to get sucked up into the sump.

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Old 05-27-2014, 08:32 PM   #7
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That's odd. I have used a mag 5 return (500gph) on a 90 with strainer in a 1" bulkhead and it was fine. I would definitely keep the strainer, but I'm wondering why it won't drain. can you take some pics?
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Old 05-28-2014, 01:16 AM   #8
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I'm on vacation but here's an old pic of the tank


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Old 05-28-2014, 01:18 AM   #9
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And bird eye of sump


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Old 05-28-2014, 01:25 AM   #10
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That's odd. I have used a mag 5 return (500gph) on a 90 with strainer in a 1" bulkhead and it was fine. I would definitely keep the strainer, but I'm wondering why it won't drain. can you take some pics?
I had to break off a few of the slits in the strainer to get it to handle the mj400. Maybe I can get a 1 inch pvc plugs and drill 1/4 inch holes in it.

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