Milky film atop water????

[ReefingWerewolf]

I know this is the wrong forum for planted tanks but im sure the info can apply to reef tanks as-well. My 22 gallon planted tank doesn't have a lid and lately i have noticed that the top of my water has a milky lay kinda like oil. If i touch it the film brakes up. I don't know what it is and how to get rid of it, doesn't seem to be hurting my fish, but its ugly to look at.

Any idea what it might be and how I might fix it?

 

[ReeferBill]

lay paper towel on top of slick and thow away and keep soaking up the slick until its gone then aim a powerhead or two to agitate the waters surface so it will send it to the filter or skimmer!

 

[ReefingWerewolf]

Thanks
Any ideas what it might be? Just curious.

 

[Kairus]

Thanks
Any ideas what it might be? Just curious.

Protein buildup.

 

[kjboggs]

I got a surface skimmer and connected to my canister filter and now top is clear.