my over flow tank idea literally an over flow tank! (help needed plz)

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Zfishies

Fire Eel
MFK Member
Apr 5, 2010
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Milky Way Galaxy,
OKay i have a 30 gallon that i will cut to make a platform and will be 5" tall. i will then have a 20gallon on top of the platform. And the water will literally over flow out of the 20gallon on to the 30gallon plat form into a drain in the platform and go through a canister filter and come back into the 20gallon.

My question is; on the platform part i want there to atleast be 3" of water so how big should i make the drain?
thanks:)

some concept pics, terrible i know i made it on paint.

View attachment fish tank awesomness of minee.bmp

View attachment fish tank awesomness of mine.bmp
 
Depends on the pump and how you do the drain. I'd make the platform 5" tall and have the drain 4.5" tall so it would essentially be an overflow. Then the GPH of the pump would determine the size of the drain.
 
hmm i think i cant do a canister then, ill do a 10g sump tthen. and by overflow i ment like flowing OUT of the tank. anyway, so make the drain 4.5" tall then how many ghp pump should i get?

so if i have the drain 4.5" tall the platform part would fill to be 3" of water?
 
The water level will be the same as the height of the overflow, which is 4.5". Then have a drain going down into a 10g sump. Then have a canister filter going from the sump to the 20G on top
 
yeah but now thinking of it i rather just make a 10gallon filter save $ and my stock isnt that heavy on this tank. so from the sump how many ghp pump should i get?
 
hum i think it will be better with canister because you will not need to worry to have water on your floor. canister will put water in your main tank and the water will fall into the "platform" and go back in the canister. only have to set 2 mark in platform for minimum and maximum water you need to have.
 
Its not a huge tank so you don't need a really high flow pump. Also the height that the pump has to lift the water is a factor. You might want to go over to the DYI section to get some opinions on pump GPH. Normally I would recommend to just use the fastest pump you can but with the design of this tank I'm not sure what to say.
 
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