So I decided to buy a new 40GB and drill holes but clueless. I want to put a sump and don't want to use the HOB overflow.
I watched a lot of videos but none seem to explain what to use in the hole? Do I have to buy from a reef supply or can I find something from Home Depot? How big should the hole be for both overflow and return? Where should I put them? etc.
Any links or suggestions?
Thanks.
I watched a lot of videos but none seem to explain what to use in the hole? Do I have to buy from a reef supply or can I find something from Home Depot? How big should the hole be for both overflow and return? Where should I put them? etc.
Any links or suggestions?
Thanks.
. then saw you response. So it's called a bulkhead. Can I buy that at Home Depot or is it specifically an aquarium item? How big does the hole need to be drilled? Thanks.

