nothing.
It is chlorine reacting with the metals in your pool water.
If all else fails, drain the pool, evict the alligators, wash off the algae residue, and start over.
yes i would think it would need to be shocked
Must know what you have been advised before I can evaluate your problem. Sand filter? D. E. filter? How long are you running the pump? What chemicals have been added? What maintenance chemicals do you use. Strength of chlorine? Dry or Liquid? What grade of chlorine? DO you add acid? Are you filling the pool with well water? How long does it take to start to turn "south"? Add to that any other info you have. Communicate to me thru my "message board".
Shocking a pool is increasing a the chlorine levels to the maximum, successfully.
Until the pool is open for business
Not long the sun is bad for it
If lightning strikes a pool with people in it, the electricity can travel through the water, potentially electrocuting individuals in the pool. It is important to immediately evacuate the pool if lightning is approaching to ensure everyone's safety.
Bye bye doggy. ☹
1 month
You should be able to use it as soon as there is water in the pool