I did use Algaefix and then followed up with Ecofix. You will have to scoop out the dead algae (I used a minnow net). On my first application, the skimmer got full of what looks like a thin layer of a thick clear substance and brown coated bubbles, I just scooped it out. It took about 1 day for my pond to clear up, then I did my second dose (per instructions). I then followed up with Ecofix and used it per instructions. I now have used a Barley extract (per instructions) and my pond has been beautifully clear. I just got back from a 1-1/2 week vacation and expected a cloudy pond, but it was perfect. My pond was a brand new build and I was told that it would take some time to get it stable, now that it is I have had no problems.
I was told to get some snails and will do so now that I am no longer adding chemicals. I did not want to use the chems, but it worked well for me and now I am au-naturale.