Here's the final cut out and sanded cone, this is by far the hardest part about building a skimmer.
Gluing the cone to the neck+coupling. I'm just using a PVC coupling cause it was like $30 cheaper than a 4" union.
Gluing on the skimmer body.
Looking at it now it's probably going to be overkill for my 75 gallon, but that just means I can always upgrade in the future!
