I have acquired a 21 x 21 desk tank. The JBJ 20 gallon ones. I also got a 4 bulb light fixture and it comes with wires to mount or hang as well as stands to put onto the tank. I thought the light stands would burn hammers or any sort of euphylia I am putting into the tank. The set up seemed perfect for stonies but for euphylia it’ll be maybe 6inches or so above the water line. How high up should I mount if I were to use this light. I would rather not mount it from the wall

