Back in the mid 80’s there was an acrylic aquarium tank, filter, and protein skimmer fabricator located in either Pa. or N. J. I was wondering if they’re still in business. They used to make a filter box that hung on the back of the aquarium, and till this day, I believe it is one of the best filters ever made. I still have one, but it’s old and I’m not sure if I trust the glued joints anymore. I probably could have it copied, but God knows how many hundreds of bucks that would cost.