Cider- white flecks on top?

[Sebrinak]

I did all my research and think I found that others think this could be campten tab leftovers, but I don't know. I have racked this 3 times. The last time I noticed the film on top and decided to rerack to check and remove headspace to see if I could clear it up, I added a bottle of homemade wine from a couple of years ago that used the same yeast. a couple of days later this is what I have, and I feel like this is growth. But you all seem to know more than I do, so I thought I would ask. The recipe, pictures, and gravity are below.

fresh apples we smashed, after dunking in sanitizer. 5 gallons
6 campten tabs, crushed for first 24 hours
The next day added EC-1118 was rehydrated with some cider. (yes I know it goes really dry)
OG- 1.050
FG- 0997

when I racked it this last time, it was a bit tart so if it survives it will need to be sweetened, but that all depends on thoughts from the pictures.
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[Maylar]

looks fine.

 

[cidergoats]

If the cider doesn't appear to be turning cloudy or have an off odor I would suspect it to be a film of yeast, or flor. I see it sometimes when I ferment in a bucket and let it sit for a while before racking off.
Here's a good reference on the topic: Film Yeast – Flor – Pellicle