Yellow/Brown dusty deposits that reappear repeatedly

[matt4x4]

Can SOMEONE PLEASE STICKY this post, it contains very usedful information to a problem that seems to be reocurring frequently!
Also, if the title can be changed to "Yellow/Brown dusty deposits that reappear repeatedly" it may help.

Oh yeah, can it be cross stickied to the ALGAE forum too (because that just makes sense to me) ???? and maybe rated as 5/5 since it's helped many get rid of this crap through persistence even beyond the pool looking sparkling clean...

[Watermom]

OK, Matt. I've done as requested. I am going to lock this particular thread, however, so we don't get people responding to both threads. If anyone wants to add any posts to this thread, please do so in the algae forum.

Thanks.