WTB - Return Pump

[SeaHorse_Fanatic]

Valving and slowing down a pump creates back pressure on the pump. Bad to have back pressure.

[MoreDakka]

Hmm....damn LFS always giving me bad info. They say that if you valve the pump that it will adjust it's voltage to compensate in turn using less power... I know nothing of the inner workings of a pump so I'm assuming I'm just being takin' for a ride.

[The Codfather]

Originally Posted by SeaHorse_Fanatic

Valving and slowing down a pump creates back pressure on the pump. Bad to have back pressure.

Not necessarily, reeflo pumps for example run more efficiently if valved off a little. They actually recommend it. Valving off a discharge is the equivalent of more head pressure.

[SeaHorse_Fanatic]

Originally Posted by The Codfather

Not necessarily, reeflo pumps for example run more efficiently if valved off a little. They actually recommend it. Valving off a discharge is the equivalent of more head pressure.

He's talking about Mag pumps or their equivalents. I've always been told that valving off Mags & similar pumps is a no-no. I've never done it so I have no personal experience of it causing a pump to fail. If I'm wrong, then I apologize for passing on bad info. However I was told this by several experienced reefers.

Anybody valved off Mags or similar pumps on here & if so, what has been your experience??

Anthony

[spit.fire]

Originally Posted by MoreDakka

Yep, I've got the pump valved and slowed down. It's not the flow I'm worried about it's the fact my whole tank vibrates with this thing and it sounds like a blender... I'm looking for something that's quiet, not something that I can hear 2 levels down :-/

Those eheim pumps are wicked expensive. However the sicce pumps seem to be reasonable. Are they reliable?

IMO the sicce pumps are one of the more reliable pumps out there, personally the best pumps I've ever owned were Laguna pumps tho but they can get expensive

[byee]

Originally Posted by SeaHorse_Fanatic

He's talking about Mag pumps or their equivalents. I've always been told that valving off Mags & similar pumps is a no-no. I've never done it so I have no personal experience of it causing a pump to fail. If I'm wrong, then I apologize for passing on bad info. However I was told this by several experienced reefers.

Anybody valved off Mags or similar pumps on here & if so, what has been your experience??

Anthony

Anthony,

I bought a Mag 5 but returned it for the Mag 7. What's the optimal number of times a tank needs to circulated?

I'm setting up a 45g cube with a 25 gallon sump.

Thoughts?

[byee]

Originally Posted by intarsiabox

Just put a piece of foam rubber under it. I ran a mag9.5 for 5 years and it was silent with a pad under it, other wise the vibration goes through the glass bottom of the sump and can be loud. I had mine throttled down (discharge side only) for the five years with no issues, the new owner has no problems with it either. With a larger pump you can also tee off of the discharge and use the extra flow to run reactors or divert flow to a refugium, etc.

intarsiabox

What type of foam rubber did you put under your pump?

I would like to do the same with my setup.

Thanks!