So we've been up to 12 hours...6pm to 6am for several days now. Everything seems to be working just fine, and I"ll be adding another pack of VitaStim Polar this week. Lots of filamentous algae in the pond, and I'm wondering if I should start working on removing what I can manually. I have Cutrine Plus left over from the fall, but I'm thinking that I shouldn't mess with the Cutrine until the water temp picks up later this spring. Thoughts or suggestions would be greatly appreciated. I would love to do some stocking, but part of me thinks I should wait until the pond is looking better.