Here's my marimo, my sis name it Animo~
Played with it by placing it in different places.
I noticed that it has small patch of "fur" scraped off, had me worried.


Attached thumbnail(s)

Hi, I have two marimos a couple of months ago, and I think they are a bit unhealthy and need some advice:
First marimo I have place it in living room with low light, it grows some dark brown patches and after I trimmed them off, it seems to become dark green.

The second one I placed it directly under a desk lamp (12w), and it grows some white patches as I believe it had been exposed to light and heat excessively. I then placed it in my aquarium (2x 24w lamps, 1 feet height from substrates) and it has some brown patches again. The average temperature of my tank is 28c. Salt is minimal.

The brown patches


The white patches


Is there a optimum condition or method to care for marimo and who had success with them for more than a year? I even found contradicting information regarding lighting and salt.

That is what I dont understand, my marimo has a lot of brown spots if I leave it on just table or put in fridge. Seems like dying.

My marimos:


DSC05755 by bdrc, on Flickr