pool opened late, green...having been adding bleach and it is clearing. however, when it is filtering, the water from the jets is clear but when i try to vacuum up debris, brown water comes from jets and clouds the pool worse. clorine isn't holding, right now it is 0 and it is light green with hazy deep end. i do have brown metal stains...questions

--why does brown come from the jets and how to correct that? i have backwashed.
--do i need to add a metal out while the clorine is low or do i add clorine first then metal out

i cannot give true water numbers as i have not been able to get my good testing kit in...all i can find is the testing strips, which i know isn't accurate but it is showing low cya. cloriine is at 0, ph is at6.0.

please advise as soon as you can so i will know what to add first.
thanks.