slight surface film

What kind of overflow do you have? Internal? External Box?

If it's setup properly, the overflow should be skimming all of that stuff off of the surface.

If you're flow is too low or too high it can prevent the overflow from skimming properly.

The other thing to look for is if your return line might be blowing the surface film away from the overflow and preventing it from being skimmed off properly.

The film itself is pretty normal, that's why they design overflows to skim off of the surface.

-JB

 

im gonna take it for granted that you have a protien skimmer.
do you have a overflow or is your tank drilled?
seems that to get rid of surface film you need to be skimming water off the top of the surface.
once in awhile ill aim my powerheads in a different direction and a pool will develope on the top of the water where its just spinning and not able to run towards the overflow, looking at the top of the water i can see a slight film on the water.
for some reason whether it be your not using a HOB overflow or the drilled overflows are not skimming off the top of the water, your not getting the water off the surface.

 

now post a pic of the tank in question.

 

yeah post em, its kinda cool seeing how it starts out.

 

tank looks cool, keep us posted.

that one fish looks like a alien, i dont know that i could sleep at night with that thing in my house.

 

you have a box fish, I'm jealous. The CB looks really good too.