Red algae

Asked July 31, 2016, 8:55 PM EDT

Hello I ve had my pond for 20 years now and this year I got this reddish algae, it disappears at night and appears around 10 or11oclock it looks green in the evening , has a greasy feel to it, what is it and how do I get rid of it without harming the koi?

Fayette County Pennsylvania ponds and watergardens algae control red grass or algae bloom

1 Response

there is a PSU webinar on this subject:
https://meeting.psu.edu/p4hzrpfzyd6/?launcher=false&fcsContent=true&pbMode=normal

This discusses id and control of algae in ponds. Other resources can be found at:
http://extension.psu.edu/natural-resources/water/ponds/pond-management/aquatic-plants

Please review the link to Planctonic algae that does turn red at times.