I have diamond saw blades for a hand saw, but not the diamond saw blade disks

I'm looking for diamon hole saws to drill holes for bulkheads. :)

WHat size hole saws? I have a 45mm and 50mm here. Going to be using the 45mm for 1 maybe 2 holes on my new sump here soon. Then Im done. I acctually got them off ebay for like $20 for the pair or something like that.

I have a old 18g tank too. Has one tiny(1/4") crack on one edge. I siliconed it, and ran the tank for another 18 months as my FW tank before I upgraded to a 30g, so it holds water fine and didnt escalate. To big for under my SW tank 22 x 12 x 14 I think size is???

And a MAG 18 I know too big LOL

I just placed an order to Bulk Reef Supply for some bits (and other stuff). I should update this thread. Bummer! Just a tad too late... :(

*Updated*

La dee da. See original post...it's updated. :)