calibration/storage/cleaning solutions are just as important as the pen.they do go out of whack with a knock or over time.
lemon juice,cider vinegar and a few others work ok.
keep er lit.
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Il stop wiping it down my top after I've used it the.. lol
Yeah I'm hoping to get a bottle of each and have a play.
Poked my head in this morning for there watering, I feed them when I wake up not when they wake. Wow The smell hit me like a bat round the chops. Hopefully sort this PH and cal mag and they should be flying.
Fingers crossed.
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