So in my home made AIO baffle system using a pvc baffle I have came across a problem. The outer seam on the return chamber has blown out, and so it is effectively bypassing the heater and filtration (I would say only about 10% of the flow through those chambers. So I temporarily moved the heater from the rear of the tank to the main chamber. So my main issue is, is there a sealant safe to cure under water with out draining the tank and moving the sand and ect?
