How To Care For Moss Balls In The Aquarium. In fact adding salt to your aquarium is a recommended solution when your marimo moss ball is morphing to a brown shade. Depending on the size of your original ball you might be.
To replicate this in your aquarium you will need to remove the ball from the tank and squeeze any excess water from the moss. Usually it indicates a trapped air bubble inside this can be fixed by gently squeezing the ball. Purchase a water thermometer from a pet store or online supplier if you dont have one already.
They appreciate low to medium light so keep them out of direct sunlight.
If youre keeping your marimo moss ball in a closed container leave it open when possible to help with surface gas exchange. Squeezing it in aquarium water forces the water out and releasing it draws the water back in. They actually do grow in salty water conditions in Japan. A few times a month put your moss balls in the fridge overnight.