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Bubbles: pearling or no?

5409 Views 10 Replies 6 Participants Last post by  Darkblade48
Hey folks!

I've been creeping on the forums for a while, but this is my inaugural post.

Apologies in advance for failing at search (I did try!), but there's a ton of conflicting information or, at the least, different-enough answers for the same question that it was hard for me to conclude a definitive answer.

This is my first planted tank, but far from my first freshwater tank. It's my first tank with shrimp.. my first tank with CO2, my first tank with CPDs.. you get the picture. Lots of firsts.

I have an anubias (barteri, as far as I can tell) that just put out a new leaf on a very long stem a few days ago. The tiny leaf, about 3/8" long, is still curled up. When I got home today, I found it streaming tiny bubbles out of the center of the curled leaf. Streaming.. absolutely constant. So constant that I thought it was a piece of hair algae (which I have a fair amount of). It's on-par with the stream of CO2 bubbles coming out of my diffuser.

At the same time, my crypts have begun melting for the first time. I'm not so concerned with it, but figured I'd mention it in case it would correlate with anything for you all.

Is this pearling? Is this damage recovery?


Spec V (5 gallon)
pH: 6.6
Temp: 79F (it's a very hot day, today)
Last water change: Three days ago, 50%


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This is a phenomenon that is sometimes called 'streaming'. It generally occurs when the plant is damaged and gases are escaping.
And holy hell... The light timer just shut off and within a minute or two the bubbles stopped.

I'm lost.
On a tangent, you really should treat/remove that algae from the plants.
That looks like an anubias flower about ready to open that the bubbles are coming from.

Plants use photosynthesis which produce oxygen, they need light for this process. SO no light = no photosynthesis = stop oxygen production= no bubbles.
Ah, yes, that definitely makes sense. Thanks for that! I can't say that I knew that it flowered... that's my failing on prior research. A quick look around and, yes, I'd agree that it looks like a flower to-be. Cool. :)

To address the tangent.. I'd love to remove the algae from the plants. I've tried reducing CO2, reducing light cycle, reducing feeding frequency, increasing water changes, decreasing water changes, etc. I can't get a handle on it. (I knowingly chose a small tank for my first attempt at plants because it's more difficult than a larger tank. I've got a dry 75g and a dry 16g bowfront that I'm itching to set up.)

I manually clip and pull algae out of the tank on a weekly basis. This was most effective with some beard algae I had, but less so with the green hair. Every time I'm in the tank, I rub the leaves (not too hard) and try to get some of it off; most of the time I'm relatively unsuccessful in making much more than a dent in it. I'm not a big fan of dosing with anti-algae solutions... though, mostly, that's because I don't understand enough of the chemistry and repercussions that the various solutions are accompanied with. That, and I just generally don't favor forced chemical adjustment.

Any suggestions?
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It is pearling and I love it when sword plants do that it usually happens when a leaf is scratched or torn or you trimmed a plant

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I can't speak for other plants you may have but the anubias plant (not the flower but rest of it) is very durable and can take a good diluted bleach dip with a thorough rinsing after to kill and remove algae. You can google up more details on how do this, I followed instructions from a YouTube vid a nice British (I believe) woman posted of how she bleach cleans her anubias.
As a slow growing plant anubias (and java fern) are prone to algae growth on leaves, reducing light duration, raising lights, and/or adding floaters and other fast growing plants are all options for reducing and preventing algae. I keep a lot of floaters and some stems in my 20g long anubias tank and have the lights raised up roughly 20" from substrate (this is not some magic height, it's just what worked for me with my lights).
I also use seachem excel in my tank since I do not have co2.
i dont think it has to be damaged to do this. ive had plants do this when i do large water changes.
i dont think it has to be damaged to do this. ive had plants do this when i do large water changes.
Yeah but think they do it from like a scratch on the leaf or a little hole or trimmes stem etc

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My sword did that when I first added some excel
I wish it would pearl like that everyday, so I don't need air stone no more!
i dont think it has to be damaged to do this. ive had plants do this when i do large water changes.
This is actually a slightly different phenomenon, I believe.

When you do a water change, the large amount of gas in the tap water wants to escape. This is done easily from nucleation points, essentially on a surface point that is conducive for the gasses to accumulate on. Sometimes, this happens to be on plants.
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