Read the polyquat page: www.poolsolutions.com/polyquat.html. That's the only way you'll be able to tell what is, and what isn't polyquat.

On an Intex, the intake is as close to a skimmer as you can get.

Clarifier is OK, if you do NOT over dose. Don't use any algaecides except polyquat; don't use any of the HTH shocks. They have 50 or so, and only 5 or 6 are OK. Most are a messed up chemical hobo-soup.

You can swim if the chlorine is over 2 ppm and the pH is between 7 and 8. Iron will stain swimwear but not people, and it's not toxic.