Last weekend, no one has switched off my tank light for 2 days since my family was away from home. When I come back to home I found that my toadstool got a yellowish thing on top of its head and it is easily removable, also it has strinked a bit, what has happened to him? Is it dying?
On the right hand side, the left hand side one is a new one..
Please help, thanks!
On the right hand side, the left hand side one is a new one..
Please help, thanks!
