Closed loop help

iflipsidei · 03/02/2007, 04:06 PM

so my OR 6500 pump and super squirt with the Version 3 drum which has them open in this order, 1 & 3, 4 & 2, repeated

are on thier way i want to head to home depot to get the pvc i need

So my question is, the outlets, should i get them all 90 degree elbow or some 45 to kick up on the sand, or a mixture of both. Also in which directions to point them in. I kinda want SPS on top and softies on bottum

I have a crude drawin here of the top and front view of my CL, i also put in there my tenative rock scape.

zoomfish1 · 03/02/2007, 05:31 PM

Use 90's on each end, just don't glue them down so you can turn them any way you want.

iflipsidei · 03/02/2007, 07:12 PM

wont that leave no flow on the sand to move waste around?

iflipsidei · 03/02/2007, 10:05 PM

Another question i have is, im using the basic idea of melvs reef CL but alot more expanded. Anyways my qutions is he drilled 1/8" holes in his intakes, which is drawn by a Mag 5

Mine will have a OR 6500 which is about 1700gph, should i make the holes bigger? or making them every 1/2" with a longer intake be fine?

I dont want to starve my pump

zoomfish1 · 03/02/2007, 10:13 PM

You could make the holes a little larger or longer intake, either one would do. I upped the pump to a mag7 and added another 2" of holes on the intake.

You DO NOT want the sand to be disturbed. That's a whole nuther set of problems. Direct the flow so it won't violate the sanctity of the sandbed!!

Oh, you might want to think about a ball valve on your return line. I think 17oogph is too much unless you have a 6' tank to spread the flow out to. With the ball valve, you can cut down the flow if it happens to be too strong.

iflipsidei · 03/02/2007, 10:22 PM

its a 5' tank and i got a gate valve on the way just to dial it down if i need, also during feeding

rafa316 · 03/02/2007, 10:22 PM

Could you explain what is the use of a closed loop?

scottwhitson · 03/02/2007, 10:40 PM

rafa316 check out www.melevsreef.com. A closed loop is to add flow to a tank without the powerheads in the tank.

carfac · 03/02/2007, 11:22 PM

I have been kicking around a bigger tank, and one of my thoughts was a closed loop... but with the returns plumbed through the sand and pointed up at 45 degrees. Or maybe a couple from the bottom, and some on top, as in this plan. I thought this would add good flow from the bottom up, and help keep things suspended longer.

But I never see anyone plan cl with some returns from the sand bed.

Is this a bad idea, or just too much work... or a good idea?

scottwhitson · 03/03/2007, 12:08 AM

I saw some pics on here once but it didn't look good at all. other than looks I think it would be a good thing to have

03/02/2007, 04:06 PM	#1
iflipsidei Premium Member Join Date: Jan 2007 Location: Ontario, CA Posts: 280	Closed loop help so my OR 6500 pump and super squirt with the Version 3 drum which has them open in this order, 1 & 3, 4 & 2, repeated are on thier way i want to head to home depot to get the pvc i need So my question is, the outlets, should i get them all 90 degree elbow or some 45 to kick up on the sand, or a mixture of both. Also in which directions to point them in. I kinda want SPS on top and softies on bottum I have a crude drawin here of the top and front view of my CL, i also put in there my tenative rock scape.

03/02/2007, 05:31 PM	#2
zoomfish1 Registered Member Join Date: Mar 2005 Location: Claremore, Oklahoma Posts: 1,659	Use 90's on each end, just don't glue them down so you can turn them any way you want. __________________ Zoomfish Current Tank Info: 75g RR, dsb w/90 lbs sand, 150 lb live rock, anemone & LPS tank

03/02/2007, 10:13 PM	#5
zoomfish1 Registered Member Join Date: Mar 2005 Location: Claremore, Oklahoma Posts: 1,659	You could make the holes a little larger or longer intake, either one would do. I upped the pump to a mag7 and added another 2" of holes on the intake. You DO NOT want the sand to be disturbed. That's a whole nuther set of problems. Direct the flow so it won't violate the sanctity of the sandbed!! Oh, you might want to think about a ball valve on your return line. I think 17oogph is too much unless you have a 6' tank to spread the flow out to. With the ball valve, you can cut down the flow if it happens to be too strong. __________________ Zoomfish Current Tank Info: 75g RR, dsb w/90 lbs sand, 150 lb live rock, anemone & LPS tank

03/02/2007, 10:22 PM	#7
rafa316 Registered Member Join Date: Mar 2007 Location: Minnesota Posts: 411	Could you explain what is the use of a closed loop? __________________ "if I asked the general public what they wanted they would have said they wanted a faster horse" Henry Ford Current Tank Info: 75g. - Rena xP4 Canister Filter - 65w T5 -2 inch sandbed - 60lbs live rock - 2 Ocellaris Clownfish - 1 Yellow Watchman Gobie - 6 Nassaiurs Snails - 1 Bumblebee Snail - 2 Emerald Crabs - 1 Red Legged Hermit Crab

03/02/2007, 07:12 PM	#3
iflipsidei Premium Member Join Date: Jan 2007 Location: Ontario, CA Posts: 280	wont that leave no flow on the sand to move waste around?

03/02/2007, 10:05 PM	#4
iflipsidei Premium Member Join Date: Jan 2007 Location: Ontario, CA Posts: 280	Another question i have is, im using the basic idea of melvs reef CL but alot more expanded. Anyways my qutions is he drilled 1/8" holes in his intakes, which is drawn by a Mag 5 Mine will have a OR 6500 which is about 1700gph, should i make the holes bigger? or making them every 1/2" with a longer intake be fine? I dont want to starve my pump

03/02/2007, 10:40 PM	#8
scottwhitson Registered Member Join Date: Feb 2005 Location: Lewiston, Idaho Posts: 1,395	rafa316 check out www.melevsreef.com. A closed loop is to add flow to a tank without the powerheads in the tank.

03/02/2007, 11:22 PM	#9
carfac Registered Member Join Date: Jun 2006 Location: Salt Lake City, UT Posts: 362	I have been kicking around a bigger tank, and one of my thoughts was a closed loop... but with the returns plumbed through the sand and pointed up at 45 degrees. Or maybe a couple from the bottom, and some on top, as in this plan. I thought this would add good flow from the bottom up, and help keep things suspended longer. But I never see anyone plan cl with some returns from the sand bed. Is this a bad idea, or just too much work... or a good idea?

03/03/2007, 12:08 AM	#10
scottwhitson Registered Member Join Date: Feb 2005 Location: Lewiston, Idaho Posts: 1,395	I saw some pics on here once but it didn't look good at all. other than looks I think it would be a good thing to have