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Old 04-26-2011, 10:25 AM   #21
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no a 1" pipe only does abour 300 gph if you want even 600 you need about a 3" pump look here Everything You Always Wanted to Know About Sumps, Part III by Greg Taylor - Reefkeeping.com

scroll down to Drain Hole Placement Size
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Old 04-26-2011, 12:06 PM   #22
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Very interesting. So it looks like a 3/4" pipe would only be turning my 55 gallon tank over 3-5 times per hour. That is fine with me.. it is better than my single emperor 280 I have running.

I will have to do some math when getting my return pump. And a ball valve or two to control flows.

This should be interesting.
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Old 04-26-2011, 12:08 PM   #23
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LOL, I gotta say I am lost. And for the record, I'm not a dumb girl, but I just don't get this gph and pipe diameter stuff. I'll keep reading along, who knows it may just click.
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Old 04-26-2011, 12:26 PM   #24
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Me neither carey, but as long as the return pump can handle the maximum this unit can drain it will be fine. And having some ball valves to control the flow is insurance.

I updated with pictures of the box that will be receiving water. I attached a small container to where the water will come in.

This way gravity will feed the water through the filter cartridge or sponge or whatever i decide to put in there to remove particles. Obviously it'll have to be cut to size.

The inside container has the bottom cut out so water will flow down into the big container. There is 2 3/4" bushings to make the DIY bulkhead, attached to a 3/4" pvc pipe and a pvc elbow to receive water from the overflow box.
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Old 04-26-2011, 04:06 PM   #25
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For the small container that goes inside the bigger container, may use slits instead of just a big hole to hold the filter media up. Less chance of water pushing the media through and it'll prob provide more structural support
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Old 04-26-2011, 05:00 PM   #26
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Originally Posted by SiberianBlood View Post
no a 1" pipe only does abour 300 gph if you want even 600 you need about a 3" pump look here Everything You Always Wanted to Know About Sumps, Part III by Greg Taylor - Reefkeeping.com

scroll down to Drain Hole Placement Size
According to the link you posted a 3" pipe does 5500gph not 600

I use an eshopps 800 which handles 800gph with a 1" pipe

I use this site for pipe size/flow rates
GPM/GPH Flow based on PVC Pipe Size, ie, How much water can flow through Sch 40 Pvc Pipe Size 1/2" 3/4" 1" 1.5" 2" 2.5" 3" 4" 6"
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Old 04-26-2011, 05:07 PM   #27
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OK, i made the skimmer, pics in original post.

I cut the lips off the container and lid and cut teeth. I had to silicone on the lid of the container for stability because it was quite flimsy. I will probably either get a clear tube or hide this with rocks as the red is quite ugly LOL.
Dont use a colour hose/tube,you need to be able to see if any bubbles are accumilating in it.
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Old 04-26-2011, 05:11 PM   #28
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Thanks guys. Feel free to make suggestions or tell me if I'm doing anything wrong. I'm just doing what i think is right.

Added picture of overflow box. I made a DIY bulkhead with 2 3/4" bushings and silicone around the edges. Then there's a piece of pvc pipe with an elbow. I have a hole cut in the top for the siphon tubing and another hole for air relief.

These containers may be too small.. we'll have to see. I think as long as it is draining and I have the siphon flow adjusted right it will be ok.

I still don't have an idea for hanging the overflow box on the back of the tank. I could use suction cups but that will look awful cutting through the background.

I'm done until tomorrow... tiring day
As Henry has said,use some sort of clamp,dont use suction cups.Have you never seen a heater or air line or even a power head ever loose suction,I have.
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Old 04-26-2011, 05:29 PM   #29
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Thanks for the tips guys.

I'll get a clear hose. Unfortunately I had that one cut so I won't be able to return it (that'll up my project cost).

I have an idea for holding the overflow box, but clamps just seem so much easier, lol. I'll probably get some of those. I could clamp the inside box and outside box together with the same clamps.

I will also probably use some clamps on the containers I'm gluing together right now. The silicone seals will be less likely to break if they're held together. The edges of the containers come together at a /\ shape.. kind of hard to let silicone alone hold that seal.
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Old 04-26-2011, 05:42 PM   #30
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For the small container that goes inside the bigger container, may use slits instead of just a big hole to hold the filter media up. Less chance of water pushing the media through and it'll prob provide more structural support
I left a one inch.. lip? .. on the bottom of the smaller container, so the media won't get pushed through. If it does I could always get a hard plastic mesh to sit there. The structure is fine right there also because the smaller container is held in between the pipe fittings and sealed on both sides.

Slits would be a good idea. I wish I would've thought of that before I started gluing the containers together. I kind of don't want to cut hard plastic now because I'll risk having to re-glue them.
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