View Full Version : How slow is TOO slow through a sump?
mikeu
08/23/2008, 06:04 PM
I'm planning my new system (300g display, 100g sump, 40g fuge) and am considering using an Eheim 1262 as the return. Would anyone have any concerns of using a 900gph pump on this large a volume of water?
Galleri3090
08/23/2008, 10:05 PM
Hi Mike,
Im plumbing my system now for a very similiar setup to yours (400G total volume), ive got 2 Eheim 1262's as returns. Sorry cant tell you much more until its all up and running.
tgunn
08/23/2008, 11:22 PM
I've heard it suggested that as low as 1 x tank volume turnover through the sump.
I think 900GPH would be perfectly fine for that size tank. Especially if you could feed a majority of that directly into your skimmer.
I'm running probably 2500GPH through my sump on my 140g. WAY too much.
Tyler
justinarambel
08/24/2008, 02:05 AM
3 to five times is what I heard
simon.007
08/24/2008, 03:30 PM
Do you use a wave maker or powerhead like Tunze? To conserve on power I use the powerheads but only return 600GPH for a 180G tank to a 200G sump
Thanks
Simon
mikeu
08/25/2008, 06:00 AM
I will be using a Tunze 6200 and a pair of 6100s for flow.
WLachnit
08/31/2008, 07:52 PM
mikeu,
I have a similar setup to yours and I debated between that Eheim pump and a Reeflo Dart. I went with the Reeflo and I have had to dial it back significantly (using ball valves). The overflows can't keep up. If I were to do it again, I would probably go with the smaller pump. Do you know how much volume your overflow can handle?
Reefer Brian
09/04/2008, 09:55 PM
Thanks for the useful info. A subject easily overlooked. I have a 280g in the works and didnt want to purchase a huge pump that sucks the electricity. I already have a 1200gph pump that I will use on it. And of course a few Tunze 6100/6200's I have as well. (Low wattage)
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