Ok I'm new on here so a big hello to everyone . My first post is one for advice on the best liner to use on a tropical pond currently have a 3 ft ripsaw a 2 ft rtc and a 2ft giant gourmai normally I'd go straight for a rubber liner with a window but due to the ripsaw is this a viable plan really don't want to make the wrong decision and put the fish at risk any help will be appreciated many thanks Ben