Mag Drive pumps???

mikeguerrero · 09/16/2006, 02:42 PM

I own three Mag Drive pumps:

1200 MD with 110 watts of heat.

300 MD with 34 watts of heat.

200 MD with 24 watts of heat.

I've been running these three pumps submerged for almost one year in the sump of my 72 gallon reef with no problems.

However, I've noticed that they do transfer a ton of heat into my water column. I do have a 1/4 artica chiller that keeps my tank safe.

The concern for me is that it's causing my chiller to come on too many times and that spells excess cash that is flying out the window.

I read that all three pumps may be ran inline and here comes my question, has anyone run these guys inline in the past? Any problems or concerns I should heed before I attempt it?

Leaking is not a concern for me since all three will be over the sump, elevated by three separate platforms that do not allow the body of the pump to become submerged. So if they leak a little no problem as it will drip to the bottom of the sump.

My sump does have a class lid that helps from evaporation and excess noise.

Will having the glass lids cause the heat to be just as bad as when they were submerged?

Thanks,

Mike G.

jdieck · 09/16/2006, 02:54 PM

Quote:

Originally posted by mikeguerrero
I own three Mag Drive pumps:

1200 MD with 110 watts of heat.

300 MD with 34 watts of heat.

200 MD with 24 watts of heat.

I've been running these three pumps submerged for almost one year in the sump of my 72 gallon reef with no problems.

However, I've noticed that they do transfer a ton of heat into my water column. I do have a 1/4 artica chiller that keeps my tank safe.

The concern for me is that it's causing my chiller to come on too many times and that spells excess cash that is flying out the window.

I read that all three pumps may be ran inline and here comes my question, has anyone run these guys inline in the past? Any problems or concerns I should heed before I attempt it?

Leaking is not a concern for me since all three will be over the sump, elevated by three separate platforms that do not allow the body of the pump to become submerged. So if they leak a little no problem as it will drip to the bottom of the sump.

My sump does have a class lid that helps from evaporation and excess noise.

Will having the glass lids cause the heat to be just as bad as when they were submerged?

Thanks,

Mike G.

I have somewhere that they eventually leak. In any case their inlet shall be flooded all the time, meaning they can not be installed above the water level. If ran externally you need to instal bulkeads on the side near the bottom of the sump to feed the inlet.

mikeguerrero · 09/16/2006, 04:34 PM

Thanks for your input, I learned that you are right about trying to run them above the waterline. It will not work.

With the first power outage they will cavitate and not be able to be primed and I will burn out the pumps.

I hope this helps out others.

My sump is made of glass and has no bulk head at the side so that option is out.

These pumps are designed to push water not pull it up.

MG

jdieck · 09/16/2006, 04:43 PM

grochmal · 09/18/2006, 11:15 AM

I ran a 9.5 on a closed loop for about a year without any leaks.
An alternative to using a bulkhead on your glass sump is to put a pvc "hook" over the edge of the tank to plumb the pump externally.
I just ran across a great picture of one the other day but can't remember where now.
Are you familiar with these?

grochmal · 09/18/2006, 11:58 AM

Here's an example:
http://www.reefcentral.com/forums/sh...55#post5407055

09/16/2006, 02:42 PM	#1
mikeguerrero Registered Member. Join Date: Dec 2004 Location: SF Bay Area Posts: 607	Mag Drive pumps??? I own three Mag Drive pumps: 1200 MD with 110 watts of heat. 300 MD with 34 watts of heat. 200 MD with 24 watts of heat. I've been running these three pumps submerged for almost one year in the sump of my 72 gallon reef with no problems. However, I've noticed that they do transfer a ton of heat into my water column. I do have a 1/4 artica chiller that keeps my tank safe. The concern for me is that it's causing my chiller to come on too many times and that spells excess cash that is flying out the window. I read that all three pumps may be ran inline and here comes my question, has anyone run these guys inline in the past? Any problems or concerns I should heed before I attempt it? Leaking is not a concern for me since all three will be over the sump, elevated by three separate platforms that do not allow the body of the pump to become submerged. So if they leak a little no problem as it will drip to the bottom of the sump. My sump does have a class lid that helps from evaporation and excess noise. Will having the glass lids cause the heat to be just as bad as when they were submerged? Thanks, Mike G.

09/16/2006, 04:43 PM	#4
jdieck Registered Member Join Date: Dec 2002 Location: Maumee, OH Posts: 15,673	__________________ Did I write what I wrote? What the heck am I talking about! Well..... Nevermind. Current Tank Info: 225 gal reef, DSB, 40 g sump w/ LRT100 return, 37 g pre-sump, 3 MH 250 W 15K, 4 96 W PC dual actinic,ETS 1500 Skim.w/LRT70, 20 lb Ca R., 40 W UV, 1/3 HP chiller, two 350 W Htrs, Neptune II Cont., 330 P LR/ 330 P LS. 55 gal Refugium

09/18/2006, 11:15 AM	#5
grochmal Registered Member Join Date: Jul 2003 Location: Jacksonville, FL Posts: 647	I ran a 9.5 on a closed loop for about a year without any leaks. An alternative to using a bulkhead on your glass sump is to put a pvc "hook" over the edge of the tank to plumb the pump externally. I just ran across a great picture of one the other day but can't remember where now. Are you familiar with these? __________________ Jeff Current Tank Info: 125 gallon bare-bottom reef, 6' Maristar light, Tunze streams, 55 gallon sump, ASM G3 skimmer, RDSB

09/18/2006, 11:58 AM	#6
grochmal Registered Member Join Date: Jul 2003 Location: Jacksonville, FL Posts: 647	Here's an example: http://www.reefcentral.com/forums/sh...55#post5407055 __________________ Jeff Current Tank Info: 125 gallon bare-bottom reef, 6' Maristar light, Tunze streams, 55 gallon sump, ASM G3 skimmer, RDSB

09/16/2006, 04:34 PM	#3
mikeguerrero Registered Member. Join Date: Dec 2004 Location: SF Bay Area Posts: 607	Thanks for your input, I learned that you are right about trying to run them above the waterline. It will not work. With the first power outage they will cavitate and not be able to be primed and I will burn out the pumps. I hope this helps out others. My sump is made of glass and has no bulk head at the side so that option is out. These pumps are designed to push water not pull it up. MG