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Old 03-13-2014, 07:21 PM   #281
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I'd say the 9.5 would get you right around 700 gph? That's not factoring in any assistance from the siphoned return either..
What do you mean? What assistance would the siphon add?
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Old 03-13-2014, 07:29 PM   #282
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I feel like it would help push water into the pump rather the pump just having to draw still water? Make sense?
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Old 03-13-2014, 07:37 PM   #283
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Yeah that makes sense. Im gonna use 3/4" for the mag pump and 1" pvc for the siphon. Would this work?
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Old 03-14-2014, 12:04 AM   #284
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Yeah that makes sense. Im gonna use 3/4" for the mag pump and 1" pvc for the siphon. Would this work?

I'm thinking the 1" PVC for the siphon might be a bit on the conservative side.

Just so that I understand this setup, this is not a drilled tank and a siphon will be used to move the water from the display tank to the sump, correct? Will it be simply a siphon (with a screened intake) using 1" PVC pipes and elbows leading directly to the sump? I've been following the stand build but perhaps I missed something. The thing I don't understand is what happens when the return pump (nice one btw) is shut off? Will the siphon continue to move water? If so, when would it stop? I have seen DYI siphon setups and there was always some type of overflow in the design that would dictate when the siphoning should stop (and not break the siphon). Would it be easier to use an overflow box as such as this one?
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Old 03-14-2014, 12:51 AM   #285
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Thanks for the reply Fresh2o, what do you mean by on the conservative side?

I like the idea of that overflow box for sure. Ill have to look into them because ive never used one
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Old 03-14-2014, 12:56 AM   #286
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Wow man those are pricey! I think drilling the tank would be cheaper. Do you know of a super cheap one? They all do the same thing just rated differently
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Old 03-14-2014, 01:12 AM   #287
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Thanks for the reply Fresh2o, what do you mean by on the conservative side?

I like the idea of that overflow box for sure. Ill have to look into them because ive never used one

With the 950 gph pump (yes, less than that with head loss) I am not sure that a 1" PVC pipe siphon could keep up. I could be wrong on this.
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Old 03-14-2014, 01:19 AM   #288
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Wow man those are pricey! I think drilling the tank would be cheaper. Do you know of a super cheap one? They all do the same thing just rated differently

They can be pricey. Shop around. They basically do the same thing but some have extra features such as dual drains, multiple siphons, prefilters, etc.
They should be rated on the maximum amount of water they can move.

Can't help you with drilling a tank. Probably cheaper.
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Old 03-14-2014, 01:20 AM   #289
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I see I see, I can always go bigger for that and use a ball valve at the end to match it no problem but I would like to know more about the overflow box. They are pricey so do you know a good diy version that would work
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Old 03-14-2014, 11:23 AM   #290
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Im having no luck finding an overflow box locally. Its very hard to find when even the fish store employees dont know what an overflow box is
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