Hair algae problem

[nyshoots]

Ok I'm not totally new to this and I know that if I have hair algae I have to have nitrates, phosphates etc... but I am having a problem in my 28 gallon and I can't figure out where its coming from. My set up is as follows,

JbJ 28 gallon hqi
25lbs live rock
Aragamax sugar grain sand
20k radium on for 6 hours a day
Brs reactor phosban/carbon
Mp-10 3/4 power in reef crest mode
Mj1200 pumps in back filter area
Tunze 9002 skimmer skimming dark wet

Livestock
1 large percula
1 hi fin goby
Clean up crew with mexican turbos, turbos, cerith, nerites, hermit crabs, emerald crab, tuxedo urchin, cleaner shrimp, serpent star

Lots of sps, zoas, and lps

Feed every other day once in the morning dime to nickle size piece of rods reef once a week I switch it up with flake and pellet food.

Weekly five gallon water changes using d&d h2ocean salt

Kalkwasser ato set up along with esv 2 part dosing as needed.

Alk 10 from red sea pro
Ca 420 from red sea pro
Mag 1600 from red sea pro
Temp 81
Phos 0 from salifert kit
Nitrate 0 from api kit
Ph 7.8 - 8.2

Ro unit showing 0 tds from 2 different meters

Don't know what I'm doing wrong but I have hair algae growing all over the place

 

[selkoner]

Check your RO filters ... But you can always use kent tech M