DB junkie;2747308; said:Were the slits for the HOB filters made by the manufacturer? Neither of my Tenecors have slits for HOBs, but then agan they are way bigger.
I have cut slits in acrylic tanks for HOBs before.... I had the same results your tank is experiencing.
I'de brace/reinforce it then set it back up. If you're worried about seams glue in triangular braces, with acrylic glue (Weld On) nothing else.
Any acrylic manufacturer is going to tell you some warpage is normal.
bingo! professional modification is to blame.waytoodeep03;2747951; said:Yes those slits in the back were done professionally by a plastics manufacturer in town. They didnt notice any warpage or downward sinking. I will call them today to see if they can reinforce the top somehow
