Welcome to the forum!
To solve your problems, I think we'll need a little more info. So, here are some initial steps AND questions for you to answer:
#1 - Get your pH down to the 7.2 - 7.6 range, as you indicated you planned to do.
#2 - Buy 20 gallons of plain 6% household bleach (or 10 gallons of 10 - 12% liquid pool chlorine) and a cheap OTO/phenol red testkit.
#3 - Add 6 gallons of bleach tonight.
#4 - Stop using the pool perfect / phos-free, at least for now.
#5 - Start running your pump filter 24/7, if you aren't already doing so.
#6 - Continue with bleach doses at night to maintain DARK yellow OTO test readings the following morning.
#7 - Tell us what COLOR the water is -- "dark" gray? green? brown?
#8 - Take some pictures of the pool and your pool equipment and send them -- full size -- to poolforum.pics AT gmail DOT com so we can post them.
#9 - What color is the "coat" that's on the pool in the AM?
#10 - Are you adding any other chemicals, besides the ones you mentioned?
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