Tropical Fish Forums

[Michael L.]

I just got a 90 gallon version of this tank, and I was looking at the overflow design with the little holes that go down the overflow. Say the power goes out... what keeps the tank from continuing to overflow into the sump? Sort of dangerous by the looks of it. Has anyone ever had any problems?
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[sirreal63]

Drainage in the event of a power outage is controlled by the height of the inner overflow pipe, that pipe also dictates the height of the water level in the tank. You will not drain much back if it is set up correctly and is the safest method for having a sump under the tank...you won't have any issues with it.
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Out on the road today...I saw a DeadHead sticker on a Cadillac...
Jack
110 Gallon DSA Pentagon

[Michael L.]

Okay, that makes a lot more sense. I haven't assembled mine yet because I don't have a stand, so I assumed that the overflow pipe stayed under the tank and didn't come up inside the aquarium.
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[dale]

Hi Mike.
Take a look at the overflow box itself. There are two walls, an outer and an inner separated by about 3/8th of an inch. The outer wall has slots at the top and bottom - this allows the display to drain from different levels. The water then flows between the walls, up and over the second, inner wall. In the event of a pump stoppage the water won't drain past the height of the inner wall. You should be able to pop the outer wall off to see how it works.
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Intelligence is not having all the answers; it's knowing how to think!

[Michael L.]

I see it now. Now I just have to make enough RO/DI water to hit the drain pipe because apparently when they say 50 gallons per day, they mean about 25.
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[sirreal63]

50 gpd is under ideal conditions...colder water temps and low pressure will greatly reduce your output.
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Out on the road today...I saw a DeadHead sticker on a Cadillac...
Jack
110 Gallon DSA Pentagon