Ah yes. The integrity of the filter really is important for safety - and having the tank clean and dark with nothing growing in it-- it's amazing how algae seem to grow with the minimum of light. Not so much pH but secondary products made by bugs not good to drink.
I am sure that 13's practical advice will be sound on this (never tried it myself)
Back on pH ..Curiously ..Despite my skepticism I note that here has been some real research on the potential beneficial effect of drinking alkaline water at pH 9.0 on shifting the gut microbiome (shifting slightly the pH inside the gut is much more feasible than the pH of bloood and within cells) - with a view to decreasing the liklihood of developing diabetes. At least - in a test set of about thirty young Danish men - the intervention had no discernible effect. But it just goes to show that there is always more to things when you think more deeply ..
But I am a complete science nerd.. and always get overly intrigued once I dig into a topic --- so I'll stop now cos we are seriously off topic here and - unless Prembio knows differently - and the perfect master has opined on any of this
