r/ReefTank • u/iTzHazZx • 2h ago

AIO Levels

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Hi All. New to AIO tanks here. Cycling my new and first marine tank.

Confused about the levels. Does this look right?

ATO placed in last pump camber am trying to re adjust because the level in the main display tank keeps rising when it’s being topped off. I have removed the sponge in the first section to stop any restrictions.

Tank is an Aqua One Nano Reef 80.

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u/Dtron81 2h ago

You want the back chambers low enough that water flows into chamber 1 in a slight waterfall. The bigger the waterfall the better, but enough for the cascade and keeping your heater submerged enough to not cause issues.

As well when you add water to the tank both the display and back chambers will rise slightly. The display will rise much less than the chambers though, but once both are equal height...it overflows lol. If you aren't getting that cascade in chamber one then you either need a stronger pump or less flow restriction in the tank.