Acrylic to Glass with Silicone??

[BCOrchidGuy]

Thanks for the replies, yes I've got some concerns about the weight of the water, I made the overflow to be about 4 gallons so there is a real concern. I thought about sanding the silicone to give it more surface but I think I'll just head over to Rona and buy another diamond bit and keep cutting.

Thanks again.

Doug