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Old 12-22-2004, 05:51 PM   #1
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overflow box

i am going to install a 10 gallon sump for my 29g. i have a rainbow quiet one 3000 pump. i plan on using it submersed. the GPH is 780GPH up to a 6 foot head. my head height will be about 4.5 feet. i also plan on putting my SCWD on the return.

which overflow box and size should i get? anything to stay away from? any extras i will need with the overflow box? i have glanced over a few things mentioning an extra PH to maintain siphon during power outages. i

thanks
steve r
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75g RR. 2x250 14k MH / 2x54 T5 act. 29g sump. ASM G1X skimmer. phosban reactor. 80lbs LS, 90lbs LR, 2x seio M620.
kole tang, bicolor angel, mandarin dragonette, ocellaris clown / BTA , cleaner shrimp, 2x peppermint shrimp, a variety of soft, SPS, and LPS corals, orange linckia star.
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Old 12-22-2004, 07:13 PM   #2
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Looks like the pump above will do about 550-575GPH at 4.5' head. Most overflows that use the U tube will be able to flow 600GPH so you should be OK with any standard U tube overflow.

Those that mention a PH to maintan syphon = Stay away from them.

I vote U tube all the way. They are easy to identify because they use a U shaped tube to get the water up and over the side of the tank vs the C channel style.
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Old 12-23-2004, 12:25 AM   #3
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thank you

steve r
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75g RR. 2x250 14k MH / 2x54 T5 act. 29g sump. ASM G1X skimmer. phosban reactor. 80lbs LS, 90lbs LR, 2x seio M620.
kole tang, bicolor angel, mandarin dragonette, ocellaris clown / BTA , cleaner shrimp, 2x peppermint shrimp, a variety of soft, SPS, and LPS corals, orange linckia star.
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Old 12-23-2004, 12:34 AM   #4
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so stay away from the CPR models and go with something like this?
http://petsolutions.com/product.asp_...verflow+Box_E_

any other brands or exact models that anyone likes?

thanks
steve r
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75g RR. 2x250 14k MH / 2x54 T5 act. 29g sump. ASM G1X skimmer. phosban reactor. 80lbs LS, 90lbs LR, 2x seio M620.
kole tang, bicolor angel, mandarin dragonette, ocellaris clown / BTA , cleaner shrimp, 2x peppermint shrimp, a variety of soft, SPS, and LPS corals, orange linckia star.
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Old 12-23-2004, 02:00 AM   #5
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I would get a CPR model....
I'd stay away from the UTube.......
Too loud and the CPR are self priming with a PH in your sump if the power goes out... The U tubes are not unless you make the hose stay in them some how...
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Old 12-23-2004, 03:08 AM   #6
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I have a CPR and I'm quite happy with it. It has never failed and in circumstances where I've broken the siphon due to my own foolishness...the powerhead automatically restarted it for me.

I have to think that all siphons can possibly accumulate air in the topmost part of the siphon. Higher flow probably minimizes this. If ever the siphon is allowed to accumulate too much air, it will stop. The powerhead ensures that there is never any air in the siphon.

If I had a C-siphon, I would still put a tube in the top and connect it to a power head to remove air.
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Old 12-23-2004, 11:11 AM   #7
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I have never had a U tube lose syphon during a poweroutage.
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Old 12-23-2004, 01:03 PM   #8
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http://www.aquariumadvice.com/download.php?id=9482

i assume this is a u-tube.

is this a higher flow unit because it has two outputs?

steve r
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75g RR. 2x250 14k MH / 2x54 T5 act. 29g sump. ASM G1X skimmer. phosban reactor. 80lbs LS, 90lbs LR, 2x seio M620.
kole tang, bicolor angel, mandarin dragonette, ocellaris clown / BTA , cleaner shrimp, 2x peppermint shrimp, a variety of soft, SPS, and LPS corals, orange linckia star.
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Old 12-23-2004, 01:17 PM   #9
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yes but he's got it set up wrong...
The tubes need to flow into the chanber to create a seal. Then it will start a siphon... There's no way how he has it set that you can remove air from the tubes. Both ends of the tube need to be under water.

As for a U Tube never losing siphon with a power failure, never heard of that before. How does the water stay in the tube? If the power goes out and the water level in your tank drops to below normal, and thats normal cause of how you have your returns set up... Then it'll get air. Unless the only way I can see it is if you have one way valves on everything. On the in and out's

Get the CPR WAY more quiet. better looking as well.
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Old 12-23-2004, 01:30 PM   #10
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good info everyone. could you explain the way the PH runs from the sump to the overflow box? how big a PH? does it run all the time?

steve r
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kole tang, bicolor angel, mandarin dragonette, ocellaris clown / BTA , cleaner shrimp, 2x peppermint shrimp, a variety of soft, SPS, and LPS corals, orange linckia star.
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