After reading articles and watching videos I wanted to say THANKS! I would be a fool not to use my 55 gallon and build a sump! Much better than canistersYou cut the acrylic , or dividers to size and silcone in place with aquarium safe silicone, your not trying to bond the acrylic to the glass with glue , same principle as putting a dividers in a tank except you just use silicone one the seams





