Any ideas to reduce the alagae build up on the pond wall and bottom. It's not major, the water is clear, water quality is good...I've reduced feeding and on wheatgerm. 10 deg C.
The small algae particles are missed by my sieve and end up in my 320..so I'm cleaning every 3 or 4 days.
Oh salt level is 0.1, could raise it?
Pond covers are also on.
Cheers Mick