Quote:
Originally Posted by reefwars
from what ive been told never glue acrylic to glass as it doesnt bond as well, its fine in your sump or overfow but for me at 60g thats around 600 lbs of water and you want to make sure yur new diy tank is as strong as it can be
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I have built several acrylic overflows and silicones them into homemade and store bought tanks. There is a trick to doing it, you have to use a plumber primer on all edges of the acrylic. This will give it some texture for the silicone to bond to. You also have to make sure that you get a bead of silicone on every edge of the acrylic that come in contact with the glass.
If you want to see a couple examples look at my 67 gal pred tank & othicx's 200 gal build, both 100% acrylic overflows.