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Yes... the needle will move from dry to moist as you get towards the bottom.. When you are about a inch from the bottom and the meter needle goes to moist then time to water/feed. Other than that the light, and PH side of things on the meter is useless. but the moisture helps you find the...

Indoors. My grow space is a 5x10x8. For lights using two viraspectra 450 leds with 1 quantum board. I have grown 4 plants successfully and harvested 13 dry oz

The meter is only good to tell you where the water is located at the bottom of the plant . When the meter gets down to the last inch of moisture, then it's time to water

Not all plants react the same way just like you and I each plant is unique. If it was over watering or under watering they would droop over. SaferGro is an organic PH down. Vinegar and Citric acid I would not recommend as they are not efficient in lowering PH.

This is true a good soil will buffer itself... but I suspect his PH is way to high so going down to 6.2 will allow the soil to rebuffer. if he keeps feeding at that level with the PH rising naturally as the breakdown microbial begins, his PH will go beyond the point where his roots can not...

Your plant that is yellow is telling you it doesnt like what YOU are doing to it. So go lower and see what she thinks. She will tell you.

Trust me bring it down to 6.2 (if you have a digitial reader the better). Weed likes it on the lower end on the acidic side. The closer you get to 7 it becomes neutral thereby preventing the roots from absorbing as much as it can. Plus if it isnt acidic, how is the microbes going to get broken...

With it being so high the plant cannot eat what you are providing.

I wouldn't bother with soil PH. If you keep the water/feeding PH down to 6.2 the soils can work itself out. The plant that is yellowing is hungry for food. Yes, feeding with water at PH of 6.75 is way too high! 6.2 is the sweet spot to allow the roots to take up nutrients.

I keep it simple with great success. Fox farm ocean w/30% perlite Fox farm trio Calmag 5ml per gallon PH'd to 6.2 Feed twice a week Flushed every 4 weeks per FF schedule. That's it folks. Latest haul 1941 grams 4 plants.

Avid grower. currently just wrapped up a Blueberries and Super Skunk LST grow.

gonna pull up a chair on this one. By the time you hit flower day 40 they will reach that upper net. Good luck! :bigjoint:

Easy there cowboy... there have been many many scientific tests prove bigger pot = more roots = more buds. Look it up, you do not have to take my word for it. Take it from a master Ed Rosenthal. So I am not "talking shit" you are. Read Ed's books and you can apologize to me later over a bud...

I am only a noob here because I wanted to check out the site. Secondly, while yes potting up is the preferred method, its too late for the fella so just help him going forward. If he waters correctly he can fill up that pot with roots. As for the pot having nothing to due to his lack of...

Pots have nothing to do with it. The larger the pot size the bigger the yield.

good luck... ill sit in and see how she goes. :bigjoint:

looking at photo 16647 fan leaf on the right looks like the beginings of a CalMag issue. If you havent done so, add 5ML of calmag to each gallon of water with Nutes PH'd at 6.2 and most of your issues should clear up. I trust you are feeding twice per week?

6.5 is too high.. The ph will float up naturally but 6.2 - 6.3 is the sweet spot. This is a nitrogen issue. They want to eat! :weed:

Furthermore, looks like low on Phosphorous... but if you feed them they should be ok. Make sure the PH is adjusted to 6.2 - 6.3 to allow the nutes to get up to the plants.

What is the PH of your water? What is your medium, what are you feeding? The yellowing is a nitrogen deficiency.