I have a Marineland Model 4 sump and I have been using it for about 5 months now. I have noticed recently that a crack developed in the middle right at where the side meets the bottom piece and it has spidered a bit. I noticed a couple other places had cracks as well. Obviously I don't want to the cracks to start leaking. The acrylic is 3/16" thick.
Is this normal? Should I be concerned about this?
Is this normal? Should I be concerned about this?