Well i set up everythingfor my betta on tuesday, and i put a litte bundle of plants that he seemed to like from the dollar tree (like the fake plants people buy) i washed them off and made it so they were floating across the water and he swam through and liked them very much. But i noticed a thick film on the top of the water, so i got nervous and took the plants out. But now im nervous that he could get sick from them. Then i thought maybe its the real plants he has because i dont have a light for them[didnt fit] He seems fine though.. he has a big bubble nest in the corner and hes always very active. Could it just be he needs his water changed already? Is there any way to not ever clean their tanks if there is a filter? So the water is always moving?