An algaecide (or algicide) is a substance which kills or inhibits the growth of algae.
I suggest you contact the manufacturer of the algaecide and find out from them what would be the bes coarse of action.
Yes
algaecide
You want to have the equipment running while adding any chemicals. You will want to wait about an hour after adding algaecide.
add a poly 60 or a 7% copper based algaecide if you dont have a heater on the pool.
Yes
Yes
Adding algaecide to the pool when the filter is on should not do any harm in fact it should mix it into the water more quickly
the same as before. whoever told you that you didnt have to shock and use algaecide lied. the same as before. whoever told you that you didnt have to shock and use algaecide lied.
It has always worked for me.
You don't have to mix the algaecide in a bucket of water, you can put it directly in the pool. I use Polyquat 60 that comes in quart bottles and add about 4-6 ounces per week. Just walk along the edge of the pool and pour it at the edge while walking. No algaecide will "eat the paint". It's not acid. In fact, all the algaecide does is strip the cell walls of the algae and make it more susceptible to the chlorine. It's the chlorine that kills the algae. However, one algaecide with a side effect of staining is Copper. It's a very effective algaecide, and it's safe - but it will stain concrete pools if it's used in a high enough concentration. And Copper can stain blonde hair as well. That's why I don't recommend using it. The preferred algaecide is Polyquat 60.
Its never done me any harm. However follow the directions on the container of the algaecide, if it tels you not to swim in the water for a period of time after treatment I would head their advice.