Pond scum or????

[Jerry]

So what is this?  I have a few guesses.

[SueSTx]

Does the pond smell a little fishy ?   

[Jerry]

I didn't notice   i can put the sniff on it!
My son when he as litle used to say that.  A family joke.

I did smell it, but did not pick up a fishy smell. It now dissapating.

[cindy]

Looks like DOC, dissolved organic compounds.  Time for a water change.

[Jerry]

it is very clear today.  I can do a few 10% water changes.  Thanks

[cindy]

Was in the 60s yesterday and today.  I dumped my skippy biofilter on the koi pond and wakin pond and did about 10% change. I try to do it all winter, love this weather.  Can't go wrong with water changes.

[Julles]

Water changes.  I started doing them after reading on AP about them, 10%-25% every Sunday.

Then came the terrible drought here in South Texas.  Trees are dying, farmers' crops and livestock are dying, watering restrictions are in effect. 

I figured that if we can't wash our cars, or water lawns but for twice a week, I'd be wrong to do partial water changes in my pond every week. 

So I've stopped for now, and haven't done a change since last spring.   

[SueSTx]

   when we had water restrictions, I'd dip water out of the tanks to water the pots etc and top off the tanks.