It is March 14th in Northern Illinois, supposed to be 60 deg. this
weekend. The ice is almost off my pond, the water is about 42 deg.
+-. The water looks dirty, my four 8" Koi are still alive and looking
up at me. I have snuck them a little food the last few days.

IT IS MY FIRST SPRING....

I am dying to start up pumps and filter ... when should I?