Holes holes and more holes

[pandora32]

I was planning on doing some holesawing on a couple of my empty tanks i have laying around. Does anybody know how many holes you can drill into the back of a 20g long? I am planning on a LOT of flow so was thinking of 1 1/2" drains and 3/4" or 1" returns. 2 each. I also want to put in a closed loop using a mag 9.5 i have laying around. As for the other tank, its just a lil 2 or 2.5 gal that i want to make a mini reef in. Havent really thought bout flow in this one much. Maybe 3/4 and 1/2" bulkheads? So i guess what im asking is-How many holes can i "attemp" to drill in these tanks and how do i figure out what size of holesaws i need?

 

[pandora32]

Nobody? I know why. The suns out right.

 

[kpiotrowski]

I was told a loose rule of thumb is to space any holes a bulkead width away from anything like, another hole, corner, overglow box,etc. but with a small tank like your 20, I would personaly be concered if they were that close and consult with an expert.

 

[JPG@CFI]

Get the bulkheads first, so you can measure for the actual size before you buy the holesaws. I heard that Clear Fabrications has every size of bulkhead and has them in quantity for a pretty fair price, might want to ask him.

 

[Peppie]

Get the bulkheads first, so you can measure for the actual size before you buy the holesaws. I heard that Clear Fabrications has every size of bulkhead and has them in quantity for a pretty fair price, might want to ask him.

Nice touch!!