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Medium PH too high

Wenz004
Wenz004started grow question 9 months ago
Anybody Idea ? My synthetic grow medium has too high PH value 7,6 - 8,2 Medium is Plagron light mix appr 70% and 30% Coco...fertilizing with hesi starter pack nutrients and water always regulating the PH to 6.2-6.4...with Plagron minus...how can I reduce the PH of my medium?
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Week 8
Plant. Other
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Polyphemus
Polyphemusanswered grow question 9 months ago
add any acid as you already do for the water that goes into the pot.. does not have to be overpriced "ph-down" branded product. just use 5% vinegar you likely have in your house already. If you try to balance it, remmber it is a log scale. each whole integer from 7 is 10x more than previous ratio of h30+:oh-. if the 'middle' is skewed just under 7, the low side is significantly more hevily weighted thant he high side in thsi context... don't go as low as it is high. get a calculator out if you have to. log // -log will help choose an intelligent counterbalance pH. your nutes are not buffered, so you are experiencing pH-drift. Find nutes that are ph-buffered and this won't be a concern. won't need that ph down or up, either. My pH strips collect dustt for years before i use 100 of them, lol. better made soilless nutes = easy button
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BerrySweetHigh
BerrySweetHighanswered grow question 9 months ago
Just keep giving water with pH 6 and the medium will turn more acid overtime. Do not rush these things just do it step by step and your plants will be ok! 😋
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Wenz004
Wenz004answered grow question 9 months ago
Hey Mouse...thanks but thats my No 1 Pott...is 2 weeks behind in my report...watering is manually and my ph device works quite well...I will post some pictures...to be honest I didnt measure ph of the soil until today...2 days ago I have got some probs thats why I did check the ph of the soil today
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m0use
m0useanswered grow question 9 months ago
That's weird. I have never seen a medium drift upwards before its almost always down. What are you using as a ground cover in your pots? Is that just dried up medium? With you setup your using it looks like its auto watering the plants, does it have any runoff? Does that runoff collect and get recycled into the system or is it garbage? With liquid nutrients you want to be getting aorund 10% of the pots volume as runoff each irrigation. I also have a feeling if you are replaying on that in soil PH/Moisture meter it is off and not accurate. I've seen and used them before in my youth and they are BUNK, they break very easily and once any oxidation or corrosion happens on the tips its pretty uselessness. Your plants are looking good and I don't see any issues of it showing lockout from high PH. I would suggest getting some PH strips designed for pool as they have two or three indicators on them for finding the PH or investing in a PH pen. The one downside to the pen is it needs calibration and proper storage but can be used many many times. I use a PH pen and love it, I calibrate it about once a month when in use. it was aorund 18$ some of the really nice ones are 100-200$ In short: monitor your runoff and get runoff, double check with a different PH probe and calibrate it if possible or buy some pool PH strips as a backup. Don't do anything dratic the plants are still healthy looking don't want to shock them. Best Of Luck!
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