Flow in a sump

[samuel88]

Hi guys i have a sump with about 5 to 6 kg of live rock, without sand. the only equipment in there is the return pump and external protein skimmer

my current turnover rate from the sump to the display tank is about 10x or maybe less? the volume of my sump. 15 gallon tank, 10 gallon tank. However there is not much wave or flow motion through the sump.

so my goal is for there to be aerobic as well as anaerobic bacteria on the live rock in my sump, so is what i'm doing currently enough? or do i need to add flow (and not just turnover) to the sump?

Thanks.

[tunicate]

anaerobic bacteria are found in environment with little or no oxygen. One of these places is deep within big pieces of LR. You don;t need flow in your sump for that.

[samuel88]

anaerobic bacteria are found in environment with little or no oxygen. One of these places is deep within big pieces of LR. You don;t need flow in your sump for that.

but its also good to try to prevent deadspots right?

[chrislwp]

but its also good to try to prevent deadspots right?

I dont think anaerobic bacteria can be achieved with just 5-6 kg of LR unless it's whole solid piece, even so that little rock serve little purpose for No3 export only.

Deadspot? U worry about cyano in sump? Do u have lighting in sump?

[samuel88]

I dont think anaerobic bacteria can be achieved with just 5-6 kg of LR unless it's whole solid piece, even so that little rock serve little purpose for No3 export only.

Deadspot? U worry about cyano in sump? Do u have lighting in sump?

well, i don't just want anaerobic, but aerobic bacteria as well. even if there isn't much water flow would there still be aerobic bacteria on the rocks?

yup i have lighting in the sump.

i don't exactly know everything that deadspots do, but i just heard that they're bad.