Hornwort Shedding After adding CO2 - The Planted Tank Forum
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post #1 of 4 (permalink) Old 11-02-2011, 12:35 PM Thread Starter
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Hornwort Shedding After adding CO2

Hello to the group, I am new(old) to the aquarium hobby after being away from it about 25 years.
This is my first attempt at a planted aquarium and I have had good success so far.
I have a 29 gallon tank well established since February of this year.
I am running 2 24 inch T5HO bulbs 10 hours a day for lighting.
Currently I have Java Moss/Fern, banana plants, corkscrew val and hornwort.
The hornwort was in the tank since March and has done very well with little to no shed.
I was not using any co2 injection.
Last week i added a diy co2 reactor with ceramic glass duffuser. within a few days of adding the co2 the hornwort has begun to shed. I calculated my co2 level and it is around 15-16 mg/l based on my PH and KH levels.
It appears to me that the co2 is having the opposite affect on the hornwort, I expected it to grow better not shed.
Has this happened to anyone else and do you think the hornwort will recover?
Thanks for any insight..
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post #2 of 4 (permalink) Old 11-02-2011, 12:37 PM
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I'm only dosing my tank with Flourish Excel and it seems to shed a little bit. It's not as bushy as it was when I first bought it. I'd like to hear about this as well

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post #3 of 4 (permalink) Old 11-02-2011, 02:45 PM
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Welcome, Joeliny!

Hornwort tends to fall apart any time there's a major change in tank parameters. Often, just moving it from a tank at the LFS to your own tank is enough to trigger this behavior. The addition of CO2 may do it as well.

I've heard that this is its way of rapidly spreading when introduced to a new location. The fragments travel around, then resume growth; resulting in many more plants in a short amount of time. In nature that's a clever strategy, in our tanks it's only a nuisance.

If any portions look like they're starting to rot, decompose, or turn to mush, throw them out. Keep the rest. Larger fragments that break away can be replanted, but it's easier to just let them float at the surface for a while until growth resumes and they're big enough to handle. You should start to see vigorous new growth within a week or so, meeting your expectations for addition of CO2.

Shinycard, it's my experience that Hornwort is one of the few plants that doesn't tolerate Excel well. It can adapt somewhat over time, but rarely shows full normal vigor.
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post #4 of 4 (permalink) Old 11-04-2011, 11:29 AM
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Shinycard, it's my experience that Hornwort is one of the few plants that doesn't tolerate Excel well. It can adapt somewhat over time, but rarely shows full normal vigor.
Yes, I did notice it too.

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