Split off of this topic. JasonLion
I was reading a CDC article that stated that to avoid eye irritation to keep the pH at 7.3. None of the recommended pH levels at TFP go that low. I am not real sure how sensative eyes are to pH levels above 7.3 (like 7.5 - 7.8), but it may be the cause of irritation. I would like to know myself because your levels look good to me and my kids suffer with red eyes as well.