i got a new light a few weeks ago it is 192 watt for my 46, after having the light on for 10hrs a day i got bad green algea it is like clumps when i touch it i did a water change but i did'nt get all the algea out of the tank, the lfs said to ruduce my light to 6hrs and the blue light to 8 hrs,sound right? how can i get the algea out without removing to much argonite?i tried a baster but that kinda put it deeper in the sand