Weird creature..good or bad?
 

Wish I had a pic but my camera isn't the greatest..anyhow

I have something growing on my LR and it looks like a transperant piece of grass? It grows about at least a mm daily and more seem to be popping up.

any idea what it could be?

Thanks

i have this too

but dez had it in his sump, is it slightly brown?
he seamed to think it was okay...