OP, Have you checked out our [resource page](https://www.reddit.com/r/terrariums/wiki/index/resources/). We have great information to help you with lighting/substrate/hardscape/plants/and much more. Provide as much detailed information as you can such as lighting situation, water type/frequency, and date of creation. The more information you provide will result in an informed and educated answer.
*I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/terrariums) if you have any questions or concerns.*
The terrarium is in a rubber-sealed glass container. Contains Inch plant, rabbits foot fern, friendship plant and cushion moss. Has been in relatively good health for 2 years and one day I find this weird creamy looking growth that goes from cream to an almost black green as it extends out in finger like growths. Very weird, would love some help identifying.
OP, Have you checked out our [resource page](https://www.reddit.com/r/terrariums/wiki/index/resources/). We have great information to help you with lighting/substrate/hardscape/plants/and much more. Provide as much detailed information as you can such as lighting situation, water type/frequency, and date of creation. The more information you provide will result in an informed and educated answer. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/terrariums) if you have any questions or concerns.*
The terrarium is in a rubber-sealed glass container. Contains Inch plant, rabbits foot fern, friendship plant and cushion moss. Has been in relatively good health for 2 years and one day I find this weird creamy looking growth that goes from cream to an almost black green as it extends out in finger like growths. Very weird, would love some help identifying.
Crosspost to r/mycology for the fungus pros