Nachos

This stuff is growing on some bricks outside in the shade and to me it looks like some of the mosses that people grow in their aquariums. It will peel up in a nice sheet to be tied to wood or rock in my tank but is it likely to survive submersed? or should I be concerned about introducing some unknown water disaster if I put it in my tank? what the heck is it,

I also see some strange green moss type stuff on shady oak trees branches and wonder if that stuff will grow submersed.

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DerekFF

It kind of looks like a fissidens species, but if it isn't I would avoid putting it in anything other than a project tank in case it melts and explodes your tank with crap

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miremonster

See this thread, similar case: http://www.aquaticplantcentral.com/f...id-please.html

neilshieh

That looks too terrestrial to be able to survive submersed.
someone on this forum has a signature that's a good rule of thumb... "if it looks like something you've lined your sidewalks with, it's not an aquatic plant."

Nachos

miremonster, I think that link you posted is the same stuff. Heck why not, I'm gonna give it a shot submersed and see.....

green857

I think the best approach in this situation would be to submerge it slowly and/or plant it on a slope with part emersed and part submerged to see how it adapts to aquatic conditions.

miremonster

I think it might be the same, but there are many creeping moss species from different genera and even families looking like this. It looks to me like several mosses occurring also in Germany, and if it would grow here, from the pic I couldn't say for sure if it's e.g. a Brachythecium or Hypnum or Homalothecium species etc.
Many terrestrial mosses may survive or even grow submersed, the better the conditions (light, CO2, rather low temperature,...), the longer, but it may be that the submerged shoots don't look well (e.g. Climacium japonicum), and I agree that Your moss from the tree is likely not suited. But it's also good to show what happens with the moss when drowned in a tank.
I'd recommend to look for mosses in damp places along water, in swamps etc.

Nachos

Hey I gave it a try and so I put this stuff totally under water for the last 20 days and it's still thriving and green. You can see it as my foreground "lawn" in the picture.
It may not be the best lawn out there but I don't have to mow it

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miremonster

Sounds good! Does it continue to grow creeping, or are the new developed sprouts rather upright? No much dying of older parts?

Nachos

I tested it out for 20 days submersed in a mesh bag so I think it's still to soon to tell if it will continue to creep rather than sprout upright as I have just recently attached it to the bottom of this tank. I haven't noticed any of it to brown and died since being under water. I guess another few weeks will determine if this stuff will shoot up or creep low. Keep in mind my though my tank is low light w/dirt no ferts no co2 and this stuff may grow differently in a "high tech" tank.

Lets keep our fingers crossed that it will continue to survive.