The fish I have in the 55 gallon tank (40 tank 15 sump) are :Let's break this all down by the numbers.
Ph 8.0, good.
Ammonia and nitrite 0, good.
Nitrate 2ppm sometimes 0. Okay, don't get hung up to much on the 0 yet. Just keep feeding.
Phosphate 0, bad, get this up. 0.05 to 0.1
Alk 10 DKh. It's okay but not in a low nutrients, especially with zero phosphates zero nitrates.
Calcium 410, good
Salanity 1.0245 okay, but don't go lower.
Water temp 78 to 81, with leds. I'm a little baffled why the swing with less. You say you have a powerhead on the right? Move it to the left side and vary the intensities of you are able. What brand is it?
You getting your own rodi unit, great! 8ppm from the lfs is bad.
Do you have fish? I don't see any, list them.
You think you have dinos? Post a close up of this algae in white lighting. Never mind, I see it. 3rd Pic you posted looks like it.
Can you get your hands on a microscope? This will confirm dinos and what type.
This is why low nutrients and high alk are bad. Dinos.
You may feed a lot more or dose nitrate/phosphate. Easier to feed more.
Stop doing water changes if this is dinos.
Stop dosing everything! For now.
2 clown fish
1 Foxface (4 inches )
1 blue eyed tang
1 starry blenny
1 diamond goby
1 cleaner shrimp
6 hermits, Mexican
2 Nassarius snails
2 star snails
So I took out about 50 percent of the rock and dip the rock in a diluted peroxide water solution . I scrubbed the algae off the rocks. I got in the tank with a toothbrush I scrubbed about 80 percent of the algae on the rocks. There was a rock in the back that prevented me from cleaning the blue acrylic the last 2 months but by removing some of the rocks to scrub the area I was able to remove this long algae on the acrylic . I noticed some white calcium deposits on the back acylric .. would that be the beginnings of coralline ? Also I had a hard lesson in the beginning of using too much white light and not enough blue light. Would you recommend ever temporarily cutting down lighting to see how that affects the algae growth? Also what kind of algae is the stuff in the picture (it’s more brown than green and about a half inch in length ) ?