I’d like to get something a little different for my 20G long community tank. 0,0, 10 Params with pH 7.0 I think KH was 4 and GH was 9 on last test. I have 6 Neons, 3 glo lights, 6 cherry barbs, 6 golden white clouds and 5 long fin leopard danios in tank. Anything unique that I could add to the tank?