I started my first reef tank about 2 months ago and I noticed a build up of a brown algae on the glass/sand. I am aware of NTS and my parameters are coming back perfect according to my LFS. My tank has a live rock in it that has Coraline on it and all my other structure is dry rock, so far I haven't seen any growth of Coraline. Last week I replaced my lights that came with the tank with an AI Prime HD and I have noticed an increase in growth of this brown algae as expected. It is not growing on any of my rocks that I can see and it only seems to like the glass. I've removed all the algae off the sides and front of the tank but left it alone on the back glass as I want to grow Coraline on the back. Should I remove the brown algae or will Coraline grow over top of it, I am worried that if I wipe the back clean I will reset what I have been trying to grow for the past 2 months. Any tips would be appreciated, Thank You.