I have a Wall Hammer coral i picked up from my LFS on friday. I have a Nicrew Saltwater ClassicLED that goes on top of my 20 gallon long. I tried using my dad's industrial grade PAR meter but its basically useless for LEDs. I attached a photo of all the specs of the LED and where my hammer is currently at in my tank. Ik hammers require medium flow, which he is getting, but the medium light part is tricky to measure. P.S Yes, i have a coral rack and wont be balancing this coral on that crappy rock tower lol.