Need to find out where I can buy 1 1/8 diamond hole saw bit ?

[Acipenser]

Originally Posted by SeaHorse_Fanatic

If these are to go down from the overflow, then don't do 3/4" bulkheads because these get easily plugged by snails & then your tank overflows.

Thanks Anthony - yes they are for the out flow I was planning on dual 1/2 drains and 1 1/2 return line .