Spots on rock ID?

[jeffmr4]

I have these brown or dark purple dots on all my rocks. The rocks are caribsea life rock so they came purple. Does anyone know what these are? (last photo of all)

[Staticmoves]

3 hours ago, jeffmr4 said:

I have these brown or dark purple dots on all my rocks. The rocks are caribsea life rock so they came purple. Does anyone know what these are? (last photo of all)

No photos show?

[colormegone]

Looks like some sort of Algae in the pic

[jeffmr4]

Staticmoves, when you click on 'last photo of all' in the original post do you see the picture?

[anizato]

i have the same rock

 

what are your phosphates/phosphorous levels at? 

what are your Nitrates?

 

any way you can point exactly at what you mean by brown or purple dots?

 

These rocks come with premade purple and some pink on the surface to make it look 'cured' unnaturally. With time, if you have a healthy tank (steady parameters consistently) you should have plenty of natural coraline growing. Which if the purple spots you mention are NEW and haven't been there since the rock was dry, then that is natural coraline algae growing. 

 

As for the dark spots, well that depends on what you tell us where your water's parameters are at. Could be some kind of algae, or slime or maybe even a sponge, could be benign or not..

[Staticmoves]

3 hours ago, jeffmr4 said:

Staticmoves, when you click on 'last photo of all' in the original post do you see the picture?

No. It try’s to open my own photos?

 

[jeffmr4]

Anizato, I haven't tested those recently but I do do about 2/3 of the tank water change every 3 days and change the filter out on the hob once per week.  I'll test my nitrates and phosphates and post back.  I've seen coralline algae before so I know what it looks like.  This doesn't look like that or the way it grows.  I'll post back.

 

Staticmoves, I'm not sure.  Other people have been able to view it so I don't know.  Sorry, I'm not so good with posting photos within posts.  I'll try to do that.

[jeffmr4]

Here is another link, 

 

Rocks

[jeffmr4]

Anizato, nitrates are < or = .2, phosphates = .02 (using Salifert and Hanna ULR test kits respectively)

 

Maybe it is coralline algae?  I'd love that.  I'll test my calcium some time.

Edited August 13 by jeffmr4

[anizato]

Interesting looking stuff... almost looks like biofilm. could it be bacterial? Diatoms because of low nitrates?

yuu think it could be coraline specs growing on the film? or could the purple specs be part of its composition? so interesting, your parameters seem great, if anything nitrates could be too low. That's the only thing that pops up for me. Hope it helps or points you in the right direction somehow.