I have been dosing Kent Kalkwasser for sometime now, but going to try Blue Life which is on clearance. Mostly use Seachem products, good quality and my corals are growing. I also have a 54g corner tank. Is yours made by AGA and do you have your sump inside the stand? I am looking to upgrade my rubbermaid tote I have been using and with limited space I was wondering what you were using? I found a 15g acrylic that is 20x10x17 that would work.