I was told to get one. It just kind of sits there taking up space. Just wondering if they serve a purpose?
They can use nitrates and provide oxygen to the fish like a plant. Just make sure to turn them every so often so that all sides get time in the light or they will rot on one side. They aren't a true moss but a type of algae. They do have some benefits to a tank. If you aren't thrilled with their shape you can open them up and spread them over a rock. Tie it down with some nylon thread or fishing line and they look pretty cool.
This is one growing over a rock in my tank. It's now about plate sized and I never have to turn it. VERY slow growing but I like it this way. This is probably close to a year old
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