Recommeneded Turnover Rate for new 80G Sump on 240G

[CrAzYNeSs]

Hello,

I'm building a new sump for my 240G and want to know what you guys recommend in terms of turnover for a large sump.

It is 48x20x20 w/ a huge wet/dry and submerged bio chambers. Currently is it hooked up at a 1100 GPH pump which is about 4x turnover.

Is that enough since there is so much area for oxygenation and biomedia in the sump?

I'm wondering if this is enough because I want to remove the FX5 from the tank. Take the media from the FX5 and put it in the submerged section of the new sump. Might leave the FX5 on and turn it into a water polishing machine.

A prompt reply would be much appreciated, before I give the okay for the build to commence!

 

[csa dad]

i would get a pump with atleast 1500gph for turnover an you should be fine

 

[cichlid fiend]

Im setting up my 180 and I tring to turn it over atleast four times in a hour. The guy at the store told me that I should get a 1800 GPH pump. Take into concideration that I have one overflow and two out takes!!!

 

[csa dad]

Im setting up my 180 and I tring to turn it over atleast four times in a hour. The guy at the store told me that I should get a 1800 GPH pump. Take into concideration that I have one overflow and two out takes!!!

from what info i have gathered over the last couple of months on this board. you should not have less than 6x turnover so for a 180g i would say atleast a 1200gph pump. but you can go bigger but i wouldnt go smaller kinda like a 7x or 8x turnover rate. an with a big tank its sometimes hard to reach the bottom of the tank if you dont have enough water pressure or gph. also have to take into consideration off how much the gph will drop depending on the head height.or in other words how high you have to ump the water to get it back in the tank.

 

[fox3]

I am pushing a bit over 1600gph @ 5' head in a 210G with a 40G sump/ fuge and it is not enough. Gonna swap out to a larger pump to a minimum of 1800gph after head is considered.

It really depends more on the diameter of your overflows when sizing the pump.

 

[csa dad]

yeah i undersized my pump when i got it also i got a mag 7 an after the head it is nowhere near what i needed. if i had two it would be good

 

[cichlid fiend]

from what info i have gathered over the last couple of months on this board. you should not have less than 6x turnover so for a 180g i would say atleast a 1200gph pump. but you can go bigger but i wouldnt go smaller kinda like a 7x or 8x turnover rate. an with a big tank its sometimes hard to reach the bottom of the tank if you dont have enough water pressure or gph. also have to take into consideration off how much the gph will drop depending on the head height.or in other words how high you have to ump the water to get it back in the tank.

Thanks for the help boss!!!

Im going to start off with the 1800 GPH pump and if i see it keeps the water crispy then ill keep it. If not ill bump it up alittle!!

 

[fox3]

yeah i undersized my pump when i got it also i got a mag 7 an after the head it is nowhere near what i needed. if i had two it would be good

Thats what my problem was. I have two 1" overflows so I expected to drain 1200gph. I bought a mag18 and after setting up I needed to just about close one drain completely to quiet the system. I added a mag7 and now both drains are closed 45°.

Gonna swap out to a mag24, this should give me more than both pumps now.

 

[Bderick67]

If using the sump for just bio, then a lower turnover or 3-4x would be fine. If you are also using for mech filtration, the higher the turnover the more waste that will be recovered.

 

[buddha1200]

I use a mag driv e with 1200 gph and two 1 inch over flows on my 180 and I don't have any problems at all,ammonia and nitrite stay at 0. This set up works fine for me and produces a lot of current in the tank,btw my sump is 60 gallons so I would say like already stated 5 to 6x turnover is all that is really needed.