Mike,
That looks like the same stuff I was finding in the skimmer and pump basket when they told me I had watermold. I think you will see less and less of the stuff as you continue to use chlorine.
I was told to pour a small amount of muratic acid through my skimmer so it would go through the lines while I was still using baquacil. I doubt that was very good for my pump and filter but it seemed to work for a while. I don't know if it will help any since you are on chlorine now.
You may try pouring some bleach directly into your skimmer while your pump is running and the high dose may speed up the process. If you don't know, MAKE sure you don't have any chlorine pucks in the skimmer when you do this as it can cause an explosion!! I don't know if it is dangerous if you have a swg or automatic chlorinator along the system, so you want to check that out before you try it if you have either.