What is this and should I worry about it?

[ashirley]

Can anyone tell me what this is coating my lily stems and waterfall weir? More importantly, should I be worried about it? It seems to be all over the surface of my liner as well. It may have always been there but as this is the first year that my water isn't green I haven't really noticed it.

 

[sissy]

looks just like good old muck and good for the pond and plants .The fish love to eat it and so do the taddies

 

[Smaug]

Algae. The good stuff,it's acting as a huge part of biological filter and is great grazing material for your fish. Please don't be that keeper who wants to remove it.

 

[ashirley]

Oh no. As long as it isn't hurting anything its free to stay.

 

[Meyer Jordan]

You might be interested in reading these two (2) articles:

https://www.gardenpondforum.com/articles/periphyton-part-1.9/

https://www.gardenpondforum.com/articles/periphyton-part-2-aufwuchs.10/

 

[addy1]

It is good normal stuff like they are all saying.