weird film on surface

[mark1187]

Hey all,

I am having a bit of an issue keeping my tank clean.. I have a weird film on the top of the tank. The film is red in color. I also have red algae on some of the rock

I currently have a 40 gallon tank with two clowns, two benggai cardinals, an orange diamond goby and a few blue legged hermit crabs.

currently for cleaning I have an eheim easy 60 pro and I do perform regular water changes.

Any ideas what this film might be, and how to remedy that and the red algae?

Thanks!