brown algae problem need id n a plan get rid

[Steveoliv]

title says it all i’m haveing some kind of brown algae problem wasn’t bad until the start of last week n now idk what do to solve this problem . i do weekly water changes i guess you can say i feed alil to heavy but i like watching my fish eat lol, alk.9.9 cal 420 mag is low 1225 ( i believe this is do you the salt i’ switched to going to be changing to tropic Marine) Phosphate 3 nitrates lil high 10-25

 

[Johniejumbo]

I’ve not dealt with an algae like that before. Does it come off fairly easily?

 

[X-37B]

Tank looks new!
I had similar brown around month 3 on my 120. Started Vibrant at half dose and it was gone in 6 weeks.
Takes awhile but worked well for me.
Here is a before and after.

 

[Steveoliv]

I’ve not dealt with an algae like that before. Does it come off fairly easily?

no i tryed scribing with brush doesn’t come off