Bubble on live rock

[chefrt]

For the past 2-week 1 see a lot of bubble on my live rock and the rock turn brown in color. Is this bad new for my tank? The bubble mostly on the middle and back of the tank at the top layer and also at the back glass, in the front I don’t see any bubble. Is this bubble to show that the starting point symptom of bubble algae. I do water change 20% every month.

[JCTewks]

are the bubbles green?, or do they just look like air bubbles?

[drummereef]

How old is the tank? When did you set it up? Sounds like it is fairly new considering the diatoms on the rock. The bubbles might just be nitrogen gas from the cycling process, which is fairly normal. Do you see any in the substrate as well?

[chefrt]

<a href=showthread.php?s=&postid=9673126#post9673126 target=_blank>Originally posted</a> by JCTewks
are the bubbles green?, or do they just look like air bubbles?

The bubble just like normal bubble, when I blow with power head it will clear from the LR, it will comeback the next day.


<a href=showthread.php?s=&postid=9673293#post9673293 target=_blank>Originally posted</a> by drummereef
How old is the tank? When did you set it up? Sounds like it is fairly new considering the diatoms on the rock. The bubbles might just be nitrogen gas from the cycling process, which is fairly normal. Do you see any in the substrate as well?

My tank is about 3yr+. This happen after 1 month I move the tank to the new place. The moving only take 1 day, with used same water and rock and additional new LR that I already curing for about 6 week, and about 40% water change using FSW. So far the bubble only appear at the LR not on the substrate

[alan214]

Sounds like Cyanobacteria. Be sure to keep doing your water changes on a regular basis (every 2-3 weeks) using RO/DI water (if at all possible) and try to "vacuum" out the cyano when you do the changes.

Also try to do what you can to maintain good water flow within your tank. You may need to add another powerhead.