Looking for caculator for bulkhead size

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Originally Posted by allincuddy

Well I have a 7/8 inch bulkhead on a 65 gallon tank andit says that size will do 440 gal/hr so that is amax. of 8 turn overs, should be good to go.3 tun overson afrag tank should be good?????
Thanks.

Do they make a 7/8" bulkhead? I've never seen any 7/8" pipe. I'm tempted to think you have a 1/2" bulkhead. Is it slip fit or female pipe threads? Remember the size of the bulkhead is actually determined by the pipe that slides/threads into it. And it's the hole inside the pip that's measured, not the outside diameter of the pipe.