For pond algae or lake algae, we recommend the copper based algaecide
Symmetry to help control nearly all types of planktonic algae, filamentous algae and chara.
Symmetry is an EPA approved algaecide that is safe for most fish, however, it is not recommended for use were there are Koi, Trout or Channel Catfish (these species of fish are more sensitive to copper based products). Simply spray evenly across the surface or spot treat algae mats as needed. No swimming restrictions apply.
Application Tips:
*For recurrent algae blooms in your pond or lake, we recommend that you re-apply Symmetry in 2 - 3 week intervals.
*For severe algae blooms, avoid oxygen depletion by applying to one half or one third of the area at a time. Allow 10 - 14 days between applications.
*Break up any large mats of algae before applying the algaecide.
*Apply Symmetry when algae first appears, and when the water temperatures are above 60 degrees Fahrenheit.
