I buffer my pens so know they are on point. Notice some plants got some burn which I know is from the ph being out. Know that as I've seen it before when a pen was out. Know this pen isn't as I buffer it and test it. What I do notice though is sometimes if the ph reads too high, ill add some more ph down and check again and the ph hasn't moved. It's almost as if taking a second reading when needed is a change it'll be wrong.
Say you check your water and need to add some more ph down. Do you rinse your pen under water before putting it in too check again?
Only a slight burn on some of the plants leaf. Nothing major and I know its from the plants I watered second time round. I even remember quite a lot of ph down accidentally went into the water and I remember thinking its got too be reading wrong as it showed it hadn't moved as much.
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