I just setup my my jbj pico and I had it cycle for about 6 weeks and had my cuc for about 2 everything doin fine doin 1 gallon wc a week and all tests good. Just running a little skimmer and thats all or now looking to add some algea prob macro. But there is a little film on the top of my water does any one know what it is an how to get to of it thanx.