So guys, I got a new Exo to replace my current clay build as with the Mistking system it is now starting to fall apart. Now it is new build time. Testing for leaks and washing. The previous owner has a whole room dedicated to empty tanks. No leaks found. Removing the new type of screen holders. Just pull them straight up the 1/4" or so that they pull then bend into the tank while pulling up. It does leave a decent sized hole though. They will have to be siliconed later. And starting the ventilation system, I hate that my fans can be seen in my current tank so I am hiding them this time. More photos as my wife and I progress on this tank. Anyone have any ideas on what would moss and green well to use as a cover for the expanding foam? I have found coco fiber tends to take over a year before it starts to green.