First pool, might be our LAST...name says it all!

[pilot-werx]

It sounds like you have poor water and lots of iron in it. Right now, I would not deal with the iron issue until the water clears up. First, do not shut the filter off. Let it run and use regular bleach to get your chlorine up. If it is new water, I am not sure you need anything for algae.

Try to get your chlorine up and just let it run. The chlorine and filter will do its job, with time.

When the water clears up, I am guessing that the liner will be brown and you will have to hit it with and acid to clean it up..

[Watermom]

If it is new water, I am not sure you need anything for algae.

Just want to clarify:
When you write "you don't need anything for algae," I'm guessing that you are referring to algaecide? Algaecide is a pretty good preventative but doesn't really help much when you already have an existing algae bloom. The best thing to get rid of algae is just lots of chlorine.

(I may be wrong about what you meant but just thought this would be a good time to remind people about this.)