Forums › General Discussion › Porous water tanks. This topic has 0 replies, 1 voice, and was last updated 10 years, 4 months ago by unabated. Viewing 0 reply threads Author Posts June 25, 2016 at 6:59 am #221256 unabatedParticipant Has anyone had to deal with porous water tanks where, when filled, seeps out through the fiberglass on the top of the tank. ?? Alan Unabated. #140 Author Posts Viewing 0 reply threads You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In