So this summer I decided that I no longer needed sleep and started up a side project to do after the kids had gone to bed. Plan was to have a sumped Aquascaper 600 running high light, Co2 and turnover. Firstly, this offered a good opportunity to have a test tank with rapid growth. Second, it gives my eldest son (who’s five) an opportunity to do some pruning without worrying too much - it’ll grow back soon enough. At the time I was very keen to see how a wet dry filter system would perform. It was Tom Barr’s “Dutch something or the other” journal that got this started, particularly certain claims that his wet dry system in his sump (disclaimer: that I’ve never seen) put 2ppm more saturated o2 into the water than canisters ever could according to his measurements. Quite the gain simply by design as a consistent 2ppm gain is relatively huge with regards to o2. What I was after isn’t available off the shelf so some cannibalism of some old tanks and a bit of creativity was needed. Old Dennerle 55l fits perfect into an Aquascaper 600 cabinet and it comes with a glass lid. The lid was cut up to make the baffles. Shout out to @Andrew Butler from whom I bought the AS600 from. His advice on pvc plumbing and willingness to hash out ideas has been a tremendous help, so thank you to you Andrew.