Sump size for tanks.

Bizzaro

Bizzaro

Fire Eel
MFK Member
Oct 5, 2006
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I made a small sump for my 240g around two years ago.. Now im looking at i think its to small should be around 40g.. Should it be okay for a 240g? I know bigger is better but i thought i read yrs ago their is a minimum size limit. The sump hasn't been used its just wasting space.

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bbortko

bbortko

Polypterus
MFK Member
Mar 3, 2010
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Northwest, Indiana
It really depends on how much the water rises in the sump when the pump it off. On my 225 with 75g sump the water level in the sump rises 3" when I unplug the pump or there is a power outage, if I had a 40g sump of same design it would rise around 6". I also need a few more inches incase the check valve fails.

If your sump is a wet/dry type you'll have less water in the sump so you will be able to handle more drainage than a wet sump.
 
ElectricBlueSeanBurch

ElectricBlueSeanBurch

Piranha
MFK Member
Nov 24, 2010
2,987
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Panaque Paradise
bbortko said:
It really depends on how much the water rises in the sump when the pump it off. On my 225 with 75g sump the water level in the sump rises 3" when I unplug the pump or there is a power outage, if I had a 40g sump of same design it would rise around 6". I also need a few more inches incase the check valve fails.

If your sump is a wet/dry type you'll have less water in the sump so you will be able to handle more drainage than a wet sump.
Click to expand...


+1 typically bigger is better for overall water volume. But as long as it doesn't overflow with a power outage and it holds enough media it will work. I also have a 75g sump on my 225, and I run both siphon breaks and check valves so I keep my sump 75-80% full
 
Bizzaro

Bizzaro

Fire Eel
MFK Member
Oct 5, 2006
1,215
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68
CA
Maybe i should try it again. I never liked the diy pvc overflow or the ones made up from other parts... I never check where the water line stops

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