Not particularly, it is an entirely natural process and actually has a scientific name, the <"neuston">. I don't tend to get much surface film in any of the tanks, but I don't feed much flake food and I have a lot of plants, but in slow growth.Does having a planted aquarium generally promote bio film within the tank?
That's fine.I shall try and get a picture for you if that's ok Darrel,
Try stirring it, if it breakes up it is bacterial and related to iron reduction. If it instantly reforms? it is oil based and may have more to do with lipids and waxes from growing plants and /or oils from dried fish food.it has more of an oily rainbow slick to it
It depends a little bit what you want, but generally a few quicker growing plants are useful during the establishment stage.I have mostly slow growing plants too I was reading a thread that we should have a mixture of fast and slow growers to even out the eco system? Eliminate algae and bba?
From reading the posts & from experience:Does having a planted aquarium generally promote bio film within the tank?