Did the fresh water to salt about a year ago. Using the same equ. and doing what I can. I have a 72 Bow with canister filters. Over the past year I have had and have some beautiful fish and some nice corals. Its time to upgrade. I want to go from the 72 to 125 tall. To get this started used equ. is cheep right now. I can buy a 125 not drilled at a good price but I can't sell the bow for much. The 125 will set in the living room (quite) and the sump will be in the basement. Overflows are nosey and not as safe as I would like. I have seen a video where they drilled the back and but a PVC across the back with a slot in the top with two returns. I can drill the glass and cut the slots and plumb to the sump. There is about a $300.00 difference between used and new drilled.I have taken some black ABS pipe and assembled it and it will look good. The difference is time to save up the money. The next thing is if I can't sell the 72 for much I will use it for my sump. I have the room for the 72 and did some studying on building a sump. I will also have a 30 gal. refugium tank overflowing into the 72. Now you know I'm nuts. Tom

