How much water through an overflow

Icebox · 11-20-2003, 08:51 PM

Does anyone know how much flow one can get through an overflow? I have been thinking about plumbing my tanks a little different and running both drilled holes in my AGA as drains. Anyone know how much water I should be able to get to flow through a 1 inch hole and a 3/4 inch hole? 1000 gal an hour?

Pro_builder · 11-20-2003, 09:00 PM

Not sure exactly what it will flow, but I am testing the same thing on my tank. Running both as overflows. I am currently running over 1100 gph through mine.
HTH

tankgirl · 11-20-2003, 09:01 PM

Hi Ice,
I've got a 1" u-tube in the overflow for my small tank and am running a Rio1700 on it (a bit less than 640G/hr) - that's pushing the envelope a bit for the 1" u tube, but seems to be fine.
Hope that helps!

mwrager · 11-20-2003, 09:04 PM

I have two 3/4 in over flows and I am pumping about 1150 gph. I have had no problems yet. I am thinking of adding another 600 gph pump making it a total of 1750 gph.

Pro_builder · 11-20-2003, 09:10 PM

Are we talking about an OverFlow Box or 2 hole drilled in the bottom of the tank?????
I have 2 hole in the bottom that are flowing 1100
Just to clarify, on my end

mwrager · 11-20-2003, 09:14 PM

Sorry, that is correct now that i think about it, it is 2 hole drilled in the bottom of the tank

11-20-2003, 08:51 PM	#1 (permalink)
Icebox Torch coral Join Date: Nov 2003 Location: Creston, NC Posts: 528 View Gallery Karma Komment	How much water through an overflow Does anyone know how much flow one can get through an overflow? I have been thinking about plumbing my tanks a little different and running both drilled holes in my AGA as drains. Anyone know how much water I should be able to get to flow through a 1 inch hole and a 3/4 inch hole? 1000 gal an hour? __________________ Mike

11-20-2003, 09:00 PM	#2 (permalink)
Pro_builder DIY Moderator Join Date: Nov 2003 Location: Oxford, Iowa Posts: 1,746 View Gallery Karma Komment	Not sure exactly what it will flow, but I am testing the same thing on my tank. Running both as overflows. I am currently running over 1100 gph through mine. HTH __________________ -Troy 180 gallon Reef, 3- 250 XM 15K MH Electronic ballast, 380 watts VHO Actinics, 2- 5 watt LED Moon lights, 100 gal rubbermaid sump, 75 gallon Fuge, ETSS 600 Skimmer, 4700-5400 gph pump for return, Octopus 3000 controller, Iwaki 40 RL skimmer pump, 2- 65w PC 10K fuge lights, 2 55 gallon barrels, Custom light oak stand and hood, misc pumps, extra 600 gallon rated tank size protein skimmer. Purple tang, yellow tang, pacific blue tang, 2 green chromis, 1 Sand sifting star, snails, hermit crabs, 2 mated perculas, pulsing Xenia, Anenome, mushrooms, ricordia, zoanthids, kenya tree 1 1/2" tall, misc other hitchhiker stuff. DIY is my dream... ...well OK the only way I can afford this Addiction!! Just as the light goes on in my head... ... I break the bulb!!

11-20-2003, 09:10 PM	#5 (permalink)
Pro_builder DIY Moderator Join Date: Nov 2003 Location: Oxford, Iowa Posts: 1,746 View Gallery Karma Komment	Are we talking about an OverFlow Box or 2 hole drilled in the bottom of the tank????? I have 2 hole in the bottom that are flowing 1100 Just to clarify, on my end __________________ -Troy 180 gallon Reef, 3- 250 XM 15K MH Electronic ballast, 380 watts VHO Actinics, 2- 5 watt LED Moon lights, 100 gal rubbermaid sump, 75 gallon Fuge, ETSS 600 Skimmer, 4700-5400 gph pump for return, Octopus 3000 controller, Iwaki 40 RL skimmer pump, 2- 65w PC 10K fuge lights, 2 55 gallon barrels, Custom light oak stand and hood, misc pumps, extra 600 gallon rated tank size protein skimmer. Purple tang, yellow tang, pacific blue tang, 2 green chromis, 1 Sand sifting star, snails, hermit crabs, 2 mated perculas, pulsing Xenia, Anenome, mushrooms, ricordia, zoanthids, kenya tree 1 1/2" tall, misc other hitchhiker stuff. DIY is my dream... ...well OK the only way I can afford this Addiction!! Just as the light goes on in my head... ... I break the bulb!!

11-20-2003, 09:01 PM	#3 (permalink)
tankgirl Reef Lobster Join Date: Nov 2003 Location: So. Ca Posts: 1,476 View Gallery Karma Komment	Hi Ice, I've got a 1" u-tube in the overflow for my small tank and am running a Rio1700 on it (a bit less than 640G/hr) - that's pushing the envelope a bit for the 1" u tube, but seems to be fine. Hope that helps!

11-20-2003, 09:04 PM	#4 (permalink)
mwrager Elegance coral Join Date: Nov 2003 Location: Gilbert AZ Posts: 1,068 View Gallery Karma Komment	I have two 3/4 in over flows and I am pumping about 1150 gph. I have had no problems yet. I am thinking of adding another 600 gph pump making it a total of 1750 gph.

11-20-2003, 09:14 PM	#6 (permalink)
mwrager Elegance coral Join Date: Nov 2003 Location: Gilbert AZ Posts: 1,068 View Gallery Karma Komment	Sorry, that is correct now that i think about it, it is 2 hole drilled in the bottom of the tank

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