Last night i turned the pump off for about an hour and a half and waited for all the dead algae to settle and then vacuumed the areas where the most had settled on waste. I then added more bleach and turned the filter back on.

This morning I put the auto vacuum back in the pool and added 5 litres of bleach. Things are looking pretty good.

Here is where I am totally confused - I still don't have my taylor kit yet, so I went to the original pool store to get more chlorine and thought i would have my water tested.

They have the computer based light tester there, and here is what they told me

FC = 5.7
TC = 5.7
PH = 7.4
CAL = 110
Alk = 77
CYA = 10

According to this the fight is over, correct? it looks safe enough to swim - and the pool looks pretty good.

But my questions are now;

How can my chlorine be 5.7 if I added 5 litres of bleach this morning? - the pool calculator says that much bleach raised fc by 4.4

How can I possibly go from a cya of 70 3 days ago, to a 50 2 days ago to 10 today (the 70 and 50 were using the visibility test, the 10 was from the computer)

Which test is more accurate - who should I trust?

Lastly - should I turn my chlorine feeder back on, should I leave it off, should I shock again to be sure?

A couple of my friends say I should just make the switch to salt

Thanks again.