jchannon

Sorry to revive this topic but I see the Taylor ones aren't available still in the UK, so what is the best kit to use in the UK these days?

We've just bought an Artesian South Sea Spa (1200 litres). We had it 4 weeks and found lots of foam and bubbles and learnt that this was from people's deodorants and hair conditioner etc so I re-filled the hot tub 4 days ago. I refilled it and noone has been in it as I wanted to get the chemistry right. We live in a very hard water area. We were given some test sticks (https://www.aquachek.com/aquachek-chlorine-4-in-1/) from the company we bought it off (should I be using something better) and it's now reporting the chlorine level is fine but ph(7.8-8.4) and alkalinity is high(180-240ppm). I knew this might be an issue so bought some ph Reducer which has Sodium bisulfate in it. I think I must have added at least 120-150grams of it so far over the last few days but the alkalinity and ph are still high. Am I safe to keep adding the Sodium bisulfate until the levels drop or have I already added way too much? Thanks