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im will be setting up a sump in a couple of weeks and i have got this query should i have to different pumps or 2 of the same?

btw the sump is going to be 17g.

From what I have read, there are no advantages to purchasing two of the same pumps, as they will eventually have different outputs. This is due to several different reasons, such as, flaws in construction, different progression of wear, etc. So, unless you find a decent pump at a decent price, you might as well as buy two, but otherwise, if you already own a pump, you can just as easily purchase a similar one, and get the same results.

John

Upon re-reading your post, I think that you may be trying to set up your sump with two pumps inline, which is not the recommended method. Here is a link to methods of pumping the water out of your sump.

http://www.wetwebmedia.com/sumprffiltfaqs.htm

I hope this helps.

John

rabbit, you dont mean one pump to put water from tank to sump and another to put the water from sump back to tank do you? if so, thats a no no and will spell disaster, way too hard to match flow rates and too many things can/will go wrong.

If you cant drill the tank, you will likely have to use an overflow box and in this case only one pump is used.

Post back and let us know where your up to in your planning and what your thoughts are mate.

-DL

Cake > Pie

i was thinkin about the 2 pump idea, but ive heard about overflows how do they work? and where would i buy one in sydney for a reasonable price?

This is what an overflow box is, drilling the tank is preferable but if that is not an option then these are the go.

http://www.aks.net.au/overflow.html

Easiest way i can see of doing this would be to use PVC plumbing from your return pump (in the sump) up to the tank. Now, the overflow box works by allowing the box to fill and then the water goes down the white bulkhead you can see in the pic. This bulkhead would need to be plumbed to some PVC or flexible hose to get it into your sump.

The overflow box shown above is one of many and to be honest i have not looked into these much in the past. I will post back when i find some better info and some suppliers.

ps. Forget that 2 pump idea, eventually the sump or tank would overflow depending on which pump was faster unfortunately

-DL

Last edited by Dark Lotus at 02-Dec-2004 05:39

Cake > Pie