Thanks for all the help in the past.
Measured this morning with Taylor kit:
13 ppm FC, no CC, I thought it was going very green so I added a bunch of chlorine yesterday evening in a shock kit we had lying around and turned the ancient SWG up to max.
Ph 2 drops to get to 7.4 so I added 600ml of acid
125 ppm ta
<30ppm ca, the black dot at the bottom never really disappeared, the test water wasn't very cloudy
The pump is running 24/7 and I have just switched off the SWG because I dont want the FC any higher. Backwashing every 24 hours.
I just put one of those floc tablets we had lying around in the skimmer basket.
It seems a little better but it is still looking crappy...apologies for the large image
We just started summer here so I think my FC dropped to around 1 ppm before I realized.