How to low ph?

Nugsery is a bit arrogant, isn't he?! m0use to your rescue - unless organoman has already filled you in! :-D

Ok a Chinese pH pen cost 20 dollars, they are good enough for a soil grow because it doesn't have to be very precise and will last for about 1 year. The only advice that I can give to you is buy one.

Hey GROWER... unfortunately, the questions page does not alert folks that you've added a comment even if you tag them.... What you want to do is to DM Organoman - I know he'll answer you there.... I have no clue how to use sulfur myself... but I would imagine directions would be on any package you buy - the trick is going to be the dosage since they probably don't indicate dosages for weed! :-D DM Organoman...

@Organoman, please, bro, tell me how to use sulfur. I should put it in my nutrients solution, or sprincle a small amount on a top of subsrate?

@Nugsery, I have no frkn pens! I have two soil meters and two water monitors cost 70 bucks each. Four meters total!

Solidly with m0use on this one...

My first guess is that you pH meter is not calibrated and is giving you the wrong value. I understand that you've got a pH pen because you are able to measure the nutrient and water solution. When you want to measure the pH from your soil with the pH pen instead of the meter that you are using currently to check if they both gice the same value you can try one of these methods. https://aptus-holland.com/soil-ph-testing/

In a mainly soil type grow, a pH of 7 isn't that bad and I wouldn't really be stressed about it. True nutrient "lock-out" does not occur until the pH is over 7.5 or under 5.5. As long as the plant is healthy and growing well, why worry..........nothing in nature is perfect and cannabis has survived for millenia unaided. Concentrate more on getting your feeding and watering right, this will give bigger results than tiny adjustments of the soil pH ever will. I spent the first 10 years of my growing life trying to get everything perfect, but for the last 30 have been content with being "in the ball park" and have not noticed any difference in quality or yields, healthy plants are THE key and a soil pH of 6.5 will not affect outcomes that any home gardener will ever be able to tell as compared to growing in soil at 7.0. pH is only super critical in inert/hydroponic type grows where the fertilizers used are only available in a very narrow pH range. Otherwise if you just can't cope with 7.0, top dressing the pots with peat moss will slowly and gently lower the pH, but by the time its gets down to 6.2, your plants will probably be ready for harvest. Sulfur is another amendment that will acidify soil, but it must be used slowly and gradually. You will find it in garden centres as an additive for "acid loving" plants such as Azaleas. Water with low pH alone will not change the pH of soil.

@m0use, I have two stick-in soil ph metrrs and to expencieve ph meters for water. My mesurments are correct. I buffered my coco coir with csl-mag solution, mixed all ingredients, they all was ph6. And magically became ph7 with every first watering. Idk what to do to lower it((((

Intresting, if your medium is really 60% soil you do not want your PH lower then 6.2 minimum and ideal is aorund 6.4. Soil will buffer its self out mostly because of all the microbe activity in it and its composure. In order to lower soils PH and make it stick people use things like Lime or Sulphur as they will constantly make the medium basic or acidic. Some times you will need to let the water sit for a bit after being all mixed up for the PH to level out or stablize, this could all be dependent on how hard or mineraly your water is your using. Plus when using biobizz nutrients they do not recommend a PH below 6.2 if I remember correctly. Coir should not alter this to much but you may need a bit of calcium and Magnesium to off set the cation exchange sites that are always shedding in it. Most coirs are buffered to help prevent this from being an issues but it can still present its self as the grow progress because the coir is breaking down. Your plants are looking healthy and I don't see many issues with them though so this all could be over thinking. One other thing is that your PH meter might be off and not reading it correctly. If its a digital one, its easy to calibrate, if its the ones like a temperature probe and a pointer/bar moves up and down it might be time to invest is a better one. The PH strips are also good but only when they have the multiple indicators when matching. its like 2 or 3 different colours per strip. Do some trouble shooting on the probe and remeasure it I would expect to see more issues if PH was really out of wack for you. Best Of Luck!