don't think supports were used. definitely don't want to damage it. prob just glue a thin plastic sheet over it. would crazy glue or e6000 work better on pet?
got fragstation and donated to harryaquatic. question, anyway to clean up, melt or glue loose filaments at the bottom of the glue tray? not a deal breaker but want to address if possible.
I'd assume it's near the end. if at the beginning, the afr would be diluted within the line post T and may have bacteria growth within the line. not sure if this would be an issue or not though.
can't you cut down the bulkheads or would that cause bulkhead to break, not seal?
if you have snails, screens on the pipes can be a good idea. dumb snails always find a way to get stuck in pipes.