Can't remember now.I'll try and get a new pic .How long did you have it in the tank Neil?
Still not the wiser...where's the experts when you need them!.....
If it sneaked in from roy theres a good chance that it is. I was there when he bought it and george used it when he did the tank a destinationMmmmmmmm....Don't think its a Hygro now!
Too small I think!