Any time you like.
pool acid, also known as hydrochlorous acid, is actually a chlorinating agent, in addition to being an oxidizing agent. that is, it will *produce* some small amounts of aqueous chlorine, as opposed to eliminating it.
you have to aid a conditioner or stabilizer with cynaric acid in it.
Ad cyanuric acid/stabilizer, this is available from your pool shop
Pool Chlorine are generally used as stabilizer and conditioner and they mainly comprise of Cyanuric acid, popularly Known as CYA. It decreases the rate of decay of chlorine in the pool by sunlight.
lots of scrubbing, chlorine and acid
Use stabilized chlorine only so long as stabilizer level (cyanuric acid level) in pool is within the recommended range of 50-80ppm.
You use acid & or Chlorine.
Algae, time for chlorine. Pool supply places have a test kit (ph) & can tell you how to use & what to add-chlorine or acid.
Have you tested cyanuric acid ( stabilizer ) ?
Check if you have any stabilizer in your pool without stabilizes (cyanuric acid) the chlorine use is greatly increased.
1 to 2 hrs. New answer: By pool powder - do you mean dry chlorine? Minimum time may be about 20 minutes with a good circulation system. That too, depends on the quantity of the "pool powder".
Yes; there is no problem with most normal pool chemicals, such as chlorine algaecide acid, muriatic acid, and pH controls.