How slow is TOO slow through a sump?

[mikeu]

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]

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]

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]

sump

sump

3 to five times is what I heard

 

[simon.007]

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]

I will be using a Tunze 6200 and a pair of 6100s for flow.

 

[WLachnit]

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]

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)