I'm assuming if you do it shortly after watering a pH strip will work just fine. Try and see. Or you could just test the pH levels of the water you're using and adjust if needed.
A pH, Light exposure, and Moisture all in one meter is only 7-8$
Definitely a good investment unless you're really...
Also, if and when you transplant to a bigger pot, I recommend either Schultz Pro Potting soil or Foxfarm.
Really great soils and if youre in the states, it should be sold locally as well.
Any local hydroponics/gardening store near you. Same for the dolomite lime.
Try maybe a Home Depot, Ace Hardware, or simply search "Hydroponics" or "Gardening" through google maps followed by your area code.
Well usually yellowing spots is caused by either your pH being too low, or too high. So get a pH meter and some Dolomite Lime and keep the pH between 6 and 7.5
My first guess was that you were misting them while the lights were on making little burn spots, but if that's not the issue, then what are you feeding them?
You should think about lollipopping the plant, as those lower leaves aren't looking too great and at this point they're just wasting valuable energy and nutes.
If you don't know what lollipopping is, it's essentially cutting off the lower leaves and leaving only the top healthy cola and...
Well you're wrong about me lying for one, and I currently have the lights set up horizontally. My cousin did the wiring and he said it's more than good enough to handle the load.
You are right about me being new, but I've been educated on what plants need to grow fast, big, and healthy. If...
So I am currently vegging 30 plants and I have 10x1kW HPS lamps spaced in a 12'x10' room one per meter squared. Technically meaning I'll have 1kW per square meter of plants once they're ready to flower and I was just wondering if I could get a few experienced grower's opinions on how many grams...