Re: Tom, when do you add the citric acid?

>>As far as a target concentration to shoot for, Jim Humble claims to have had 100% success in Africa using a concentration of 1ppm free chlorine dioxide. I think that is a good target to shoot for


Haha you keep coming up with that Tom but who knows what concentration Jim Humble really used in Africa, certainly the least he used was 1ppm for malaria but who knows what the results were. I thought you'd established he'd got the ppm wrong anyway
At least no-one will come to any harm with 1ppm