Golden slime in waterfall rocks-help

[Coloradogirl]

Hi! Does anyone know why the rocks in waterfall and stream down to pond have turned a golden orange color? It’s a bit slimy and can be wiped off but is over every rock the water touches. No fish in pond but mule deer drink from it most days. TIA

 

[TheFishGuy]

Welcome to the forum and wonderful pond you have there! I am in Colorado too!

that is just a form of brown biofilm ( algae ) it is quite healthy and can help filter the water. Nothing to worry about, and I would encourage you to keep it that way.

 

[Coloradogirl]

Welcome to the forum and wonderful pond you have there! I am in Colorado too!

that is just a form of brown biofilm ( algae ) it is quite healthy and can help filter the water. Nothing to worry about, and I would encourage you to keep it that way.

Awesome thx!!! So glad it’s not something to worry about!

 

[Mmathis]

Hello and welcome!

 

[addy1]

Welcome to our forum.

Healthy for the pond like they are saying.

 

[Jhn]

Agree it could be just an algae, could be other things though as well like Cyanobacteria or dinoflagellates.

What type of filter system do you have in the pond?

 

[j.w]

@Coloradogirl

 

[Coloradogirl]

Agree it could be just an algae, could be other things though as well like Cyanobacteria or dinoflagellates.

What type of filter system do you have in the pond?

Only has a pump and water runs thru aqua flow pond filter mat. Had an overgrowth of filamentous algae and some kind of floating green algae I treated with fountec algaecide And barley power packs. That took care of the problem then all the rocks started tuning golden orange/brown color. Did the same last year. I have no fish in this pond as they are quickly eaten so only use chemicals “safe” for other wildlife that drinks it. New to this all so advice appreciated!

 

[Bluerooster]

How big is your pond? Approximate gallons of water?

Nice pond BTW.

 

[Coloradogirl]

Thanks! It’s prob around 800 gallons(guesstimate) It’s actually 2 small pond waterfall areas connected by stream like run down to bottom larger pond.