GHA/Turf Algae

[StradicCi4]

Tank Details

75g Hagen with AIO conversion -
3x 26Hydras on WWC schedule
DMP35, Hygger Gyre - Viper return pump
Reef Octopus Classic 1000 HOB skimmer
100+lbs rock
3" Sandbed

lots of coral and 10 fish.

Herbivores incl - Blotted Rabbitfish/Hippo tang, turbo snails/ urchin

Just beat dinos with silicates and bringing nitrates/phos up - even when 0/0 I had GHA/Turf algea

I don't have lots of it but I do have patches, and one rock seems to get it worse than other - none of the herbivores seem to touch it, I cant pull it off when I am doing a water change, its really into the rock. The only thing that seems to work is when I pull the rocks and spray them with hydrogen peroxide, I am in Canada so I cant get Flux RX and the pharmaceutical grade fluconazole didn't seem to touch it.

Parameters as follows - all checked with Hanna Checkers

DKH - 10 - steady for 3 months
Po4 - .21 (I realize its high, but I intentionally brought it up from 0.03, as Dinos started to take hold and I wasnt fighting that battle)
Nitrate 23
Calc 480

Dosing AFR - Using Aquaforest Reef Salt - RODI 5 stage - 10g water change every tuesday

What can I do to deal with it?

 

[Gumbies R Us]

Photos of the algae?
How much CUC do you have?

Manual removal is always one way I reccomend to get rid of GHA

 

[StradicCi4]

Im currently 400km away from my tank and wont be back until tuesday. Its more turf then hair, but some is hair like. I cant get any of it to pull off the rocks without lifting the rocks. In the past when I've tried manual removal its come off like nothing.

as for CUC

I have 1 blue tuxedo urchin,
5 mexican turbos,
1 emerald crab
many many many trochus snails
some ninjastar snails
2 hermits
peppermint shrimp

 

[exnisstech]

I don't fret clumps here and there. I too have rocks that algae loves and other it never grows on. IME algae loves dry/dead rock and not seasoned live rock as much.

 

[StradicCi4]

I would agree some rocks get it way more than others - I also am not super concerned about it, its just something i'd like to clean up. my tank had about 20% dry rock, the rest was all live rock from my previous system.

 

[Mr. Mojo Rising]

You can order Brightwell razor from amazon for about $30, I think its the same or similar. it got rid of my bubble algae problem and I still have 2/3 of the bottle left.

With that said, pictures would help, I mean you seem to have good filtration, perhaps its just a few low flow spots that are growing algae?