Originally Posted by Gregcoyote
I had heard using Fiberglas was a no-no. It leaches chemicals into the water from the resins. When you built your sump with it, did it cause any problems?
I got it from a reefer. Who had used it as a sump.
I think you are right but this has thick blue paint. So the paint protects it.
I used it for a bit. It's good. But had 2 issues. 1.Acrylic baffles-silicon-fibreglass didn't glue very well.
2. Couldn't see anything from side.
So going back to glass. Now can't find a 40 gallon tank.