90 Fresh---->Salt Drilling Tank?

[RenHoek104]

Hey Chammy,
I use an overflow because my tank is old and I was told drilling old tanks could lead to no tank, so I opted for the overflow. I use a tom pump as well and I haven't had any troubles. However, if I were to get a new tank, I'd drill it for sure. You'll never have to worry about the siphon not starting after a blackout. I also use a check valve on the return pump to avoid a spill, so far so good.
Ren