Funny algae film

[Joko]

Hello friends
Yesterday I put Coral Essentials Black Label (4 drops of each) into my 620 liter aquarium for the first time, and it immediately formed a strange film of algae. What could that be?
Aquarium is 10 months old and has 620 liters
thank you

 

[Joko]

Sorry folks, I didn't use the film properly, can someone tell me how to use a video?
thank you

 

[chipchipbro]

maybe upload via youtube