Hi all, this is second time this happened to me in different tanks. My redmoor wood or someone calls it spider wood used in aquarium grow something that looks like small roots. this on pictures and first one are bought in different local shops first one was boiled in water this was wasn't.
That thing have white color tops and black color "body". It is easy removable with toothbrush and it sinks. Snails and shrimps aren't interested in it.
Anyone whit similar thing or any ideas what that is? I found very little informations on google.
@Cory maybe you saw it in China or somewhere else?
I removed 2 weeks agou all of it and this is new growth.