Is this algae good or bad

[dennism]

I just started the tank 2.5 months. Just started to eliminate the Diatoms but. I am starting to see spots on the rock. Are these good the spots wont scrape off or feel slimy to the touch as of yet. I just saw them start to appear today. Any idea of what it is would be a huge help

 

[Katrina71]

Can you take a pic in white light?

 

[road_runner]

Need better picture.
Are these dots purple?
They do look weird..

 

[dennism]

Need better poctute.
Are these dots purple?
They do look weird..

White at 100% and blue at 40%
There are slight light green shades here and there on the rock when under the white. The spots are a brown under this light. Under my normal 100% blue and 45% white the spots look black.

 

[dennism]

White at 100% and blue at 40%
There are slight light green shades here and there on the rock when under the white. The spots are a brown under this light. Under my normal 100% blue and 45% white the spots look black.

Looks like some small purple spots popping up too here and there. Maybe coraline? Not sure. Testing the water levels.now

 

[road_runner]

Looks like some small purple spots popping up too here and there. Maybe coraline? Not sure. Testing the water levels.now

Hmmm. Maybe. But never saw caroline grow like this and with such speed..what's your kh? Are you running high kh?

 

[dennism]

H20 results
Amonia- 0
Kh- 179
Calc 420
Nitrate 0
Phosphate slightly below
.25ppm
Tomorrow is water change day. I'll test again, more pics and continue to monitor.
I've been doing 20% water changes biweekly with 2 of the filtered imaginarium ocean water boxes. Rodi for top offs

 

[dennism]

H20 results
Amonia- 0
Kh- 179
Calc 420
Nitrate 0
Phosphate slightly below
.25ppm
Tomorrow is water change day. I'll test again, more pics and continue to monitor.
I've been doing 20% water changes biweekly with 2 of the filtered imaginarium ocean water boxes. Rodi for top offs

Ph is 8

 

[dennism]

These photos are zoomed. The actual size are the size of a dot from a sharp pencil