pump question
Thank you both for your comments. Yes I think it would be better next to or in the sump, but with the size of this tank and the fact that I have 8 foot ceiling you can imagine not much room either under or on top of the tank and I would prefer to work on a ladder than sprawled out on the floor. Karl question , why do you think it is better to have the pump outside of the sump? I would think that being in the sump would cool and isolate vibration’s better. And Bill I wish you told me this two years ago, I have been using a mag 12 pump on my pond and it in fact does suction the water out and over the edge of my raised pond then back up to the filter, haven’t had an issue to date.And yes if I disconnect the discharge from the pump water does flow, it works as a syphon. I really didn’t think these pumps were going to work as a suction pump, just figured i would ask. My reason for asking this group is that I have been a stalker…errr I mean lurker for a year or two and have been impressed by the answers to questions posted. And Bill I am not sure how you can handle those cold winters up there,;>) I 20 year removed from Massachusetts, now living on Maui.. thank you both. mark
On Wed, May 14, 2008 at 2:38 PM, Bill Dowden wrote: > You CANNOT put an aquarium type pump ABOVE the water. The water has > to flow into it all on its own - by gravity. The test is if you were > to take the tubing off of the pump’s discharge with the pump turned > off, would water continue to run out of the pump. If not, it will not > work. > > And you cannot run a suction line up and over something. Any suction > line must be plumbed so that: if there was air anywhere in the line, > it will escape all on its own out one end or the other (with the pump > off. So a straight pipe with either end higher will work. A tubing > in a “v” or “U” shape will work. But an upside down “V” will NOT > work. (such as trying to suck water thru a piece of tubing that goes > up from inside the water, over the edge, and down to a pump. Won’t work. > > 
> > Bill > > — In Ponds-Koi@yahoogroups.com, “Karl Schoeler” wrote: >> >> Test out your pump with the 1″ pvc. Personally I’d put the pump > beside the sump rather than in it…..if you can. Pumps generally > push much better than pull so it may work best from the sump area to > the top of the tank. >> >> I have three systems which sound somewhat similar to what you are > doing. One is a 240 gallon with twin/connected trickle towers and two > pumps plumbed into them with the water equalized by a 1″ connecting > pipe between the towers. The flow and the sump level are equalized. I > use a skimmer for each tower and a spray bar for each pump. The > pumps are located outside each tower. >> >> Karl >> —– Original Message —– >> From: Spirit Kanaka >> To: Ponds-Koi@yahoogroups.com >> Sent: Wednesday, May 14, 2008 4:01 PM >> Subject: [Ponds-Koi] pump question >> >> >> Ok I have a question about pumps. >> Not for my pond but rather a large aquarium,(320 gallon) I am > setting up. >> I have a wet dry filter for it and I was wondering if it would work >> to place the pump on top of the tank instead of in the sump? >> I am thinking of useing a mag 12a that I have, not sure if this pump >> would be able to pull the water up, that high or not from the floor to >> the top of the tank is about 6 feet the tank itself is 48″ tall. >> I am planning on running 1″ pipe PVC from the sump to the top of > the tank. >> Ant thoughts ? Comments? >> thanks >> Mark >> > >
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