Not surprised to see the DSM tanks are doing well three years out. I post this link fairly often.
Usually to promote the idea of a simple (wet start) bowl for newbies. I currently have six tanks in my home-office, and only one is larger than 5 gallons. They are all different, all easy maintenance, and all bring me joy. I thank you, Diana, for this wonderfully effective method, that works just as well on my 50 gallon plus tanks in the rest of the house.