flow problems

[spikehs]

Originally Posted by reef_raf

Just curious...what size is this tank?

it is 25gal cube (18x18x18) with an 8 gal fuge attached directly on the back.

I guess what my problem is now, is that I had 1inch holes drilled, but the bulk heads are 1/2inch.. does anyone know how much flow you can safely run through a 1/2inch bulkhead?