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Overflow Q

brett

O. vulgaris
Registered
Joined
Mar 25, 2004
Messages
96
what is the GPH of a 1 inch hole for a side drilled overflow? I drilled my tank with a 1 and 1/4 bulkhead and it can not handle my 700 gph pump. it oveflows the tank so im adding another? I was just wondering if anyone knows the GPH of a hole about 1 inch in diameter?
 

Colin

TONMO Supporter
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Nov 14, 2002
Messages
3,985
I dont think that there is an exact way to answer what the GPH will be... but you are doing the right thing adding another hole. My large cuttle tank when i had it, had three 1" holes on the side panel and that was a 600 or 700gph pump
 

brett

O. vulgaris
Registered
Joined
Mar 25, 2004
Messages
96
ok yea cuz i think i am gonan throttle my pump down too so it seems like it will work if the mesh coevring the holes doesnt slow the flow too much.
 

Colin

TONMO Supporter
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Nov 14, 2002
Messages
3,985
Okay, also watch for the octopus blocking the holes, thats another reason i had three in the first place... Spread them out :smile:
 

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