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How to kill javamoss on hardscape?

Knuta

Member
Joined
26 Mar 2022
Messages
31
Location
Norway
I have a tank currently running that was going beautifully.
High tech, full carpet of dwarf hairgrass, some rotalas and ludwigias, and some pieces of nice looking dark brown wood that I had in a previous aquarium.

Story time, skip to the end for the actual question:
One day I was admiring the tank, I spotted a bit of moss on the wood. What's this, I thought. The wood had been dry for 4-5months prior to its current use, and I cleaned it thoroughly when I put it away last. I removed the moss with my tweezers, and thought nothing of it. A couple of weeks later I found some moss amongst my dwarf hairgrass carpet. I removed it promptly, and scoured the DHG for more moss. I thought that was it. But no; that was just the beginning. Long story short; The moss eventually took over the entire carpet. It was awful. No matter how much I removed, the damn stuff would always remain, creeping in the shadows. I gave up.

The tank has stood here next to my desk for a few months now, left to do it's own thing. I feed the fish, of course, and I do waterchanges weekly. Other than that, it has given me no joy.
Today, I finally mustered up the will to do something about it. I tore out almost all the plants, and removed the wood. I left the epiphytes to float about, awaiting a new home.

Now, on to the question in the title:
I never want to see the javamoss again. I do want to use the hardscape materials again, but I can't risk another round of cancer spreading from the depths of the wood.
What I've done so far:
  • Removed the wood from the tank
  • Sprayed it thoroughly with a bleach mixture (50:50 water/bleach)
  • Left it outside in the cold to freeze (Literally, it's -6c at the moment)

What more can I do to make absolutely sure the javamoss does not return? I thought about pouring gasoline on the wood and setting it on fire, but that interferes with the plan to reuse them at some point. 🙄

Any ideas?
 
I like java moss on wood and trimming it regularly, l think it looks good,. But if you don't want it just keep scrubbing it off. It's a surprising survivor and will often appear out of nowhere in the aquarium It shouldn't overwhelm a carpet as described if you can remove daily for a while. I have had java moss on bogwood outside on the patio and survive the winter so cold doesn't seem to affect it at all as you know
 
I like java moss on wood and trimming it regularly, l think it looks good,. But if you don't want it just keep scrubbing it off. It's a surprising survivor and will often appear out of nowhere in the aquarium It shouldn't overwhelm a carpet as described if you can remove daily for a while. I have had java moss on bogwood outside on the patio and survive the winter so cold doesn't seem to affect it at all as you know
You would be surprised how awful it is to get ut out of a carpet of DHG. If as much as a tiny piece gets away, it will come back. It roots into the soil and grows very quickly. If you remove a large piece that has rooted, a tiny piece will of course break off and disappear. I don't want to ever see it again. It is literally worse than duckweed in my opinion. Just awful stuff.


Thanks for the tip about boiling, @PARAGUAY. Will do that after an actual bleach soak ☠️
 
I feel your pain about java moss - this stuff should come with a warning label! Shrimp love moss though so I have switched over to what I believe is Christmas moss (Vesicularia montagnei) which grows much more under control and which doesn't weld itself onto hardscape and other plants like java moss does. I don't have a carpet so I have been diligently removing any java moss as it appears which I think has nearly gotten rid of it.
 
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