actually the company thats puts out the all famous pythons markets a couple of great products for cleaning the glass or acyrlic when the tank is set up and also a seperate one for when it isnt. glass cleaner 13gc, used for exterior glass or acrylic and fish safe,RYDYT1 for hard water build on set uo aquariums, and RYDYT2 for empty tanks, i have used all of them and they give the best results so far