Pearling on nearly dead leaves? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 02-01-2008, 06:15 PM Thread Starter
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Pearling on nearly dead leaves?

I bought three amazon sword plants in those emerged tub dealeos, and so the outer leaves are dying off as they get used to being submerged. However, on my yellowed, nearly brown leaves I noticed there was some pearling today (haven't had a chance to trim up, been busy with college senior design projects this week).

Is this something that other folks have seen? I have never seen pearling on such unhealthy plants/leaves like this.


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post #2 of 6 (permalink) Old 02-01-2008, 06:23 PM
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I've never seen that.
Question: have you done a water change recently? And if you are injecting CO2, How are you doing it?

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post #3 of 6 (permalink) Old 02-01-2008, 06:28 PM
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Two thoughts:

It's actually algae pearling or it's "streaming" oxygen from the damaged areas. Are they bubbles that just stay there or is it bubbling with a pattern, like a plant heartbeat? Can't say I've ever seen it happen outside of those two possibilities.
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post #4 of 6 (permalink) Old 02-01-2008, 07:52 PM Thread Starter
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I have a DIY CO2 setup going into the tank (10g). Haven't done a water change recently, just topped off though about 3 days ago. The bubbles stay there, no real pattern to them. It confuses the heck out of me.


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post #5 of 6 (permalink) Old 02-01-2008, 07:56 PM
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I thought mine was pearling and it turned out to be damaged leaves.... (getting old) mine too were fairly new plants. I even took videos. the video in the first post is best but there is another video in another of my posts in the same topic. As I understand it, if the bubbles are coming from the same spot consistently, it is damage and not pearling...

https://www.plantedtank.net/forums/ge...g-already.html

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post #6 of 6 (permalink) Old 02-01-2008, 10:21 PM
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I have. If the plant is actually doing well, ie acclimating, so the leaves look like crud but the plant is actually busy doing things like forming a root base or starting new leaf buds, then yes, it's perfectly normal to see O2 coming from it especially from damaged leaves. If the leaves have started to break down in places then it's more likely you'll see O2 pouring from them once the plant starts to do it's daily routine, as you would see if you were to break or cut the leaf during pruning. Pearling and O2 coming from damaged areas is essentially the same, accept that pearling is usually associated with the plant being so saturated with O2 that it bleeds out of even undamaged spots and is a good indicator of nutrient balance, whereas it's much easier to see O2 pour out from a place of damage, balance isn't so necessary, just some photosynthetic activity within the plant.


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