Hello, and thank you for this forum.

The pool is 42" x 16' (13.5' at the top) rubber sided, filled for 4 weeks without issue, until now.
Have been using the 3" TabletsPlus in a floater (nothing else has been added).
The chlorine and pH levels have been in the ideal range until today (via a Pool Shop basic 5 test kit).
Vac 3x a week.
Filter runs 6+ hours daily.

There was a dusty wind storm overnight and the pool was messy this morning with some leaves/dust, and had some bubbles upon skimming, also has some pea-sized patches of foam.

Upon testing, the chlorine didn't register at all, and upon checking, the tab floater was empty. Also found out the filter had NOT been changed since being set up 4 weeks ago (thought it had chlorine in the floater and that the filter had been changed 3x already).

I loaded the floater with tabs (and it will be vac'd today soon) but believe the chlorine floater alone cannot be enough, fast enough, in this condition.

Can bleach be added after it's vac'd? Or can you please recommend a way to quickly increase the chlorine level?

Thank you for any help!

h2opup