IOS system water levels

[Moomoomilk]

Hello all!

I just have a quick question... Regarding the IOS systems in tanks like ocean free nano space tanks and others out there, what's the water level like in all columns? As I seen in shops the water level at the pump column is lower but my tanks with IOS tend to have all equal water levels... And as I observed the design is seems that that would be the case but how come the water levels are different when I see them outside is there something im doing wrong?

Cheers!

[BFG]

Water flow from a higher area downward. One compartment would still be slightly higher than the other. The pump compartment water level would be lower than the rest due to the fact that when the pump is off, water would still flow into the sump due to siphon effect and the extra space would accommodate the extra water from the display tank.

Or you could ask the tank owner to demonstrate this effect by switching off the return pump.

[Moomoomilk]

Hi BFG

Thats is what i thought should be the case.... however my return pump compartment's water level is the same as all other compartments...

Any thought?

Cheers!!

[Marine_fanaticz]

Hi.. I can what you mean cos it happened to me before when I was using some china brand nano iOS. however now that I'm using a oceanfree nano3, water levels in all my 3 compartments are constant. Hmmm Did you add additional media in any of the compartments?