Film build up on acrylic cylinder

[rambo1224]

I have a 70" high acrylic cylinder tank, with artificial reef in the middle. It seems after about a week, a light film appears on parts of the cylinder. It comes right off with a mighty magnet, but wondering if there is something I can do (or specific fish to buy) to prevent it.
thanks

 

[MrPillow]

Why kind of flow do you have within the tank? Is it equally distributed?

 

[rambo1224]

Why kind of flow do you have within the tank? Is it equally distributed?

My artficial reef has 2 jets that circulate the water. My flow is good. The film builds up all over (even areas right next to the jets).

 

[Sniperhank]

If the tank is new it's probably diatoms. Could also be that the stuff in the middle is blocking flow and it is an algae buildup.

 

[rambo1224]

If the tank is new it's probably diatoms. Could also be that the stuff in the middle is blocking flow and it is an algae buildup.

Tank is about 8 months old. I have 2 SOL LED Modules. Is there something I need to add 2 the water, or possibly get some special fish/inverts to help control it