I would like to try to grow a backdrop of Christmas moss in one of my tanks. I have read about placing it between two layers of mesh and suction cupping it to the tank wall.
My question is what is the quickest way to get this stuff to spread?
(ie) prunning techniques, high light, high nitrates etc.
Use a Taxiphyllum
spp. They tend to be easier, grow faster, and attach better, at least in my experience.
I don't think there is a need for having two layers of mesh. One would be fine, just wrap it a few times with fishing line. Make sure there isn't any way for fish to get back there, because they will probably die if they aren't noticed.
Prune back as needed, as often as posssible, to encourage dense growth. Also, don't let it get too long, keep it as close to the mesh as possible, while still obscuring the mesh. I let driftwood do this once, and while it was attached completely 6 months ago and completely covered in dense moss, I didn't trim it enough, and the bottom layer rotted off. So now I have a huge mat of moss that isn't really attached anymore, and will need to be retied (A huge hassle).
Moss will do well under low light, low CO2, and nutrients. But moss will look it's best and have the quickest and densest growth if everything is in abundance.
I know that terrestrial moss likes a lot of phosphate. Not sure if that has anything to do with aquatic moss.