Algae On The Surface

[xtreme2100]

Hey guys inside my tank is absolutely fine with two plecos and cherry shrimp no algae problems at all. However on the surface of the water slowly getting thicker is a green algae what do you recomment to get rid off this. I have a time on my lights so i can quite easily change the time my light is going for but am worried about my hornwort and java moss.

 

[aaronnorth]

Whats your surface agitation like?

 

[xtreme2100]

Whats your surface agitation like?

It was pretty good my filters powerful but i turned it donwn coz the shrimp dnt like fast water ive angled the filter more upwards though since you think that might be the problem and il giv it a day or to coz its looking a bit better already. Thanks a lot mate.