Mag 12?

wiggie89 · 03/11/2006, 08:59 PM

I am setting up a 55 with a 70 ref. and 50 coral prop. for a closed loop in the main display is a mag 12 with 1/2 inch pipe and 3 nozzles withe the knuckle pieing good enough.

wiggie89 · 03/11/2006, 09:02 PM

Sorry 3/4 lock line

RockStarFish · 03/11/2006, 09:06 PM

It should be ok depending on what you want to keep but for just the return it should be fine . If you want sps you might need to ad mor flow

wiggie89 · 03/11/2006, 09:15 PM

well it will be closed loop, but there also will be a return that will add more flow

sjm817 · 03/11/2006, 09:51 PM

To get max flow from a Mag12 you need 1.5" plumbing. 3/4" will severely restrict flow.

wiggie89 · 03/11/2006, 09:53 PM

Really then how come the in and out of the pump is 3/4 inch

wiggie89 · 03/11/2006, 09:56 PM

I really need movment and push/psi it is a closed loop.

sjm817 · 03/11/2006, 10:01 PM

Because that is the way Mag makes their pumps. I know it sounds odd, but that is the way it is. 3/4" will be a severe flow restriction. Even on a Mag9.5. You need to double the outlet size.

Its here in the Danner installation instructions

wiggie89 · 03/11/2006, 10:03 PM

wiggie89 · 03/11/2006, 10:10 PM

But will the psi go down. I am new as you can tell) Like if I had a polyips two feet away will they feel it. If i went 1.5 how many outlets would i need

sjm817 · 03/11/2006, 10:18 PM

You would lose a TON of flow with 1/2" or even 3/4" plumbing. There is no point in using a pump like a Mag12 if you are going to kill 1/2 of the flow anyway with undersized plumbing.

Not all pumps work this way. Pressure rated pumps such as most external pumps don't need the huge plumbing to get good flow. I like Mag pumps for the most part, but this aspect of them, I do not. Working with 1.5" plumbing is not fun.

As far as the number of outlets, its up to you. Maybe 4 or so?

wiggie89 · 03/11/2006, 10:39 PM

Thanks I will make both with quick diconnects then see what what is better

03/11/2006, 08:59 PM	#1
wiggie89 Registered Member Join Date: Feb 2006 Location: Conneticut Posts: 205	Mag 12? I am setting up a 55 with a 70 ref. and 50 coral prop. for a closed loop in the main display is a mag 12 with 1/2 inch pipe and 3 nozzles withe the knuckle pieing good enough.

03/11/2006, 09:51 PM	#5
sjm817 On Yer left! Join Date: Sep 2004 Location: Northern VA Posts: 18,777	To get max flow from a Mag12 you need 1.5" plumbing. 3/4" will severely restrict flow. __________________ - Scott

03/11/2006, 10:01 PM	#8
sjm817 On Yer left! Join Date: Sep 2004 Location: Northern VA Posts: 18,777	Because that is the way Mag makes their pumps. I know it sounds odd, but that is the way it is. 3/4" will be a severe flow restriction. Even on a Mag9.5. You need to double the outlet size. Its here in the Danner installation instructions __________________ - Scott

03/11/2006, 10:18 PM	#11
sjm817 On Yer left! Join Date: Sep 2004 Location: Northern VA Posts: 18,777	You would lose a TON of flow with 1/2" or even 3/4" plumbing. There is no point in using a pump like a Mag12 if you are going to kill 1/2 of the flow anyway with undersized plumbing. Not all pumps work this way. Pressure rated pumps such as most external pumps don't need the huge plumbing to get good flow. I like Mag pumps for the most part, but this aspect of them, I do not. Working with 1.5" plumbing is not fun. As far as the number of outlets, its up to you. Maybe 4 or so? __________________ - Scott

03/11/2006, 09:02 PM	#2
wiggie89 Registered Member Join Date: Feb 2006 Location: Conneticut Posts: 205	Sorry 3/4 lock line

03/11/2006, 09:06 PM	#3
RockStarFish Registered Member Join Date: Nov 2005 Location: SLC,UTAH Posts: 477	It should be ok depending on what you want to keep but for just the return it should be fine . If you want sps you might need to ad mor flow

03/11/2006, 09:15 PM	#4
wiggie89 Registered Member Join Date: Feb 2006 Location: Conneticut Posts: 205	well it will be closed loop, but there also will be a return that will add more flow

03/11/2006, 09:53 PM	#6
wiggie89 Registered Member Join Date: Feb 2006 Location: Conneticut Posts: 205	Really then how come the in and out of the pump is 3/4 inch

03/11/2006, 09:56 PM	#7
wiggie89 Registered Member Join Date: Feb 2006 Location: Conneticut Posts: 205	I really need movment and push/psi it is a closed loop.

03/11/2006, 10:03 PM	#9
wiggie89 Registered Member Join Date: Feb 2006 Location: Conneticut Posts: 205

03/11/2006, 10:10 PM	#10
wiggie89 Registered Member Join Date: Feb 2006 Location: Conneticut Posts: 205	But will the psi go down. I am new as you can tell) Like if I had a polyips two feet away will they feel it. If i went 1.5 how many outlets would i need

03/11/2006, 10:39 PM	#12
wiggie89 Registered Member Join Date: Feb 2006 Location: Conneticut Posts: 205	Thanks I will make both with quick diconnects then see what what is better