Here is an email exchange I had with aquaticmagic last week.
clearly they don't have a clue how to keep this stuff alive,
since they only hold it for resale, they don't really grow it.
I got your fissidens splachnobryoides moss 6 weeks ago looking like this;
I broke it up and tied it to a nylon rope and now it looks like this;
I'm growing Fissiden Fontanus in the same tank and it's looking great;
why is your fissidens splachnobryoides failing on me?
Please share what water, salinity, temperature conditions do YOU grow it in?
I'm reading complains on forums all over the web that this moss goes brown
on everyone and never recovers. I'm holding out hope that it will survive, but
what specific things can you suggest I do to improve the odds?
They prefer medium to high light. What is the lighting condition.
Let us know whether it survive. We will resend you in this case if the
plant fail to survive.
Keep us update.
While I appreciate your offer to send me replacement plants,
they won't do me any good if I don't know what growing conditions are
most favorable. It would benefit in the long run from you to help me
identify the problem, since this plant's failure is a common
complaint, and if we figure out the common cause, it will help other
people buy and enjoy this plant from you, if I can post positive
results on various plant forums. -Joey
Here is all my light/water information;
avg temp 76f
Co2 - medium from DIY
O2 - low from plants only
WPG >3 - 8 hours daily
Salt - very low
trace & micro fertilizers added
-no fish are disturbing this moss
growing on porous nylon rope
Here is the condition we are using.
other factors are negligible
something is missing that is critical here.
this moss was in very soft water originally
gh1/kh1 for over a Month, yet it still went brown.
I only hardened up the water in hopes that would help.
do you actually grow the moss, or just hold it
for resale from a grower. perhaps it's simply not
in your tanks long enough to die on you.
what temperature do you keep your water?
I know some mosses are very temp sensitive.
can you think of anything else that may be a factor?
thank you for taking the time to consider and respond.
Good day! We got it from grower. The temp is about 80 degrees. I think
you have to watch the fertilization. Some claim that excess Seachem
Excel can kill the plant.
I'm forced to conclude, this moss requires
very cold water or normally grows immersed.