Green algae and monti cap color loss

[MikeD5]

I have been getting a lot of algae, don't know what type.. also do not know why my monti frags are losing color.
reefer 170 with reefled90 at 55 watts currently at 15kelvin
5 gallon water change every week
water quality
using brs 5 stage rodi with redsea blue bucket at 1.026
alk 9.2 with hanna dose all 7 times per day
cal 430
mag 1320
nitrate is undetectable
PO4 is reading 0 with hanna
salt currently 34.3
ph swing 24 hrs is 8.26-8.39 currently is at 8.25
temp is 77.2 degrees
Any thoughts to why I'm getting this algae I can't get rid of or the color loss(bleaching)?

 

[Big G]

Bump

 

[Nanoreefboi]

I have been getting a lot of algae, don't know what type.. also do not know why my monti frags are losing color.
reefer 170 with reefled90 at 55 watts currently at 15kelvin
5 gallon water change every week
water quality
using brs 5 stage rodi with redsea blue bucket at 1.026
alk 9.2 with hanna dose all 7 times per day
cal 430
mag 1320
nitrate is undetectable
PO4 is reading 0 with hanna
salt currently 34.3
ph swing 24 hrs is 8.26-8.39 currently is at 8.25
temp is 77.2 degrees
Any thoughts to why I'm getting this algae I can't get rid of or the color loss(bleaching)?

The algae may be consuming the nutrients (that’s why it reads zero). Also I would try dosing amino acid supplements such as acropower. Everything in my tank colored up within a week or two. Just do your best to manually remove it and do even bigger water changes to get rid of the excess nutrients.

 

[Subsea]

@MikeD5

The picture does not show me the algae that you speak of. From your parameter readings, I think you should feed more. There are more than 20 different amino acids which are formed from bacteria acting on protein of which 15 amino acids are from animal protein and the rest are from vegetable protein (algae)

In nature, all coral can produce all of its amino acids to grow. Considering that at the hobby level, amino acids can not be measured, I consider dosing amino acids as haphazard.