drain and return

iflipsidei · 02/10/2007, 01:42 AM

So im at a perdicament, here is what i have a 100g soon to be reef tank. I have a corner overflow with two 1 3/4" holes in the glass bottum and one 1 3/4" on the top side of the overflow box.

So my question is how can i plumb this to get the most drainage and return.

options im considering is use 1 hole for a drain and the other a return

another is to make two duro stands to drain, and keep the noise down and return the water up the back of the tank

another is a some what large duro with one hole the drain and the other to let the air in, and under the two holes and T split and return the water up the back tank.

So I am open to suggestions, i would like the most flow with out sounding like niagra falls, but i am not agianst using power heads.

jer77 · 02/10/2007, 02:26 AM

I can't picture the hole in the overflow. I think though you should use both holes as drains so you can use a large enough pump for an 100 gallon tank. On my 75 gallon I use a mag 9.5 and use both holes as drains. I then plumb it back into the tank from the back and over the top into a manifold. Drilling a hole in the back of the tank is sometimes better though.

iflipsidei · 02/10/2007, 09:52 AM

the hole in the side of the overflow is about 2 inches below the top of the overflow

do you think a 9.5 would be enough for a return on a 100g? or should i go with a mag 12? and how much presure do i lose if i were to split the return?

02/10/2007, 01:42 AM	#1
iflipsidei Premium Member Join Date: Jan 2007 Location: Ontario, CA Posts: 280	drain and return So im at a perdicament, here is what i have a 100g soon to be reef tank. I have a corner overflow with two 1 3/4" holes in the glass bottum and one 1 3/4" on the top side of the overflow box. So my question is how can i plumb this to get the most drainage and return. options im considering is use 1 hole for a drain and the other a return another is to make two duro stands to drain, and keep the noise down and return the water up the back of the tank another is a some what large duro with one hole the drain and the other to let the air in, and under the two holes and T split and return the water up the back tank. So I am open to suggestions, i would like the most flow with out sounding like niagra falls, but i am not agianst using power heads.

02/10/2007, 02:26 AM	#2
jer77 Phish Lover Join Date: Dec 2004 Location: Pittsburgh, PA Posts: 2,642	I can't picture the hole in the overflow. I think though you should use both holes as drains so you can use a large enough pump for an 100 gallon tank. On my 75 gallon I use a mag 9.5 and use both holes as drains. I then plumb it back into the tank from the back and over the top into a manifold. Drilling a hole in the back of the tank is sometimes better though. __________________ - Jonny -, 120g 5 Year Old Reef w/ SPS, BTA, Zoos & some Softies. 40g Frag Tank. 40g Sump. Super Reef Octopus XP 3000 External Cone Skimmer. 250W Radiums. TaoTronics LED. PanWorld 200PS w/SQWD

02/10/2007, 09:52 AM	#3
iflipsidei Premium Member Join Date: Jan 2007 Location: Ontario, CA Posts: 280	the hole in the side of the overflow is about 2 inches below the top of the overflow do you think a 9.5 would be enough for a return on a 100g? or should i go with a mag 12? and how much presure do i lose if i were to split the return?