Got my new liner, and have taken out the old one. Now I have a few questions before I proceed.

1. Algae, mold, or mildew on walls and floor beneath liner. Some is black and some is green. Should I just spray this with bleach before putting in the new liner? I've heard tales of a black algae behind the liner causing permanent stains, and I don't want this.

2. Filling the dimples in the vermiculite. Do I need to find some pool-krete for this, or is it okay to trowel sand in these spots? (I have a few bags of filter sand laying around, and was going to use that.)

3. Roots coming through slope in deep end. I cut these runners off and sprayed Ortho on the area to try to stunt the growth. Should I be concerned about this?

4. I bought new gaskets for Main Drain, Skimmer, light, and returns. PB placed the original gaskets on fitting behind the wall foam and liner. I was thinking they should go between liner and the outer plates. Please advise proper placement.

Thanks for the great advice I always get from this forum.

- Andy