had a post on this the other day about spots, i looked at my resin vesel, 10 inch one like the pre filters size, and there was tiny little white spots inside
so i decided to change the resin, after 2 years, cough, but the water was only reading at 001, it was all manky and brown at the top and then when that came out it was a slurry inside. i never changed resin before because i havent needed to so i dont know wheter this is normal
maybe its not the reading, maybe it just needs chaning ever so often...? as with pre filters...?