Mars hydro setup. 24k gold & white widow

Your right. Experience is a valuable teacher.. Also trying new things to valuable but there is also value in letting plants grow.. I think your thoughts about the early feeding are indeed why Dennis has experienced such a downturn.. Cannabis plants use 99% of the water they intake for transpiration.. The other 1% combined with nutrients plus sunlight is what does the actual growing. A key word here is 99% of water is used for transpiration. Plants use a lot more water then nutrients.. I shy away from humidity domes with seedlings because 99% of the time a seedling should be able to intake all the water she needs from the root zone...Doming is for clones period. Sunlight and water bro.. Nutrients are all just various types of salts and sugars and mostly water anyway :) .

If your pH is coming out higher in the runoff, it usually means you can increase your nutes a little bit. With that in mind, the first true leave probably yellowed due to nitrogen deficiency. No worries, first true leaves aren't very hardy anyway

hei bro i wasted some time studying these damn filters ... i think it is an ion exchange resin and / or cationic the reverse osmosis brings the conduction of water to ~ 0 ~ 40 uscm ... i I am satisfied with an everpure filter .. used by Coca-Cola Company and usa army .... microfiltration and some resins brings my ex from 600 uscm to 250... something is needed in the water ... Cal Mag if you don't have to add it ... deprives and tests the electrical conductivity of the water ..... maybe they are used and full of harmful substances

Do you have mold/mildew or some kind of fungus you need to deal with? A good organic fungicide and pesticide you can use is neem oil (according to recommended amounts) mixed with baking soda (1 teaspoon/liter) in tomato leaf water (or water with tomato leaf extract) the neem oil is a good fungicide and pesticide, the baking soda is very effective against fungi, and the tomato leaf water are excellent against leaf munching pests. As for the plant in the picture if you're saying that the diet was different with more potassium than what is mentioned then try checking the pH level of the runoff as well as the irrigation to make sure the soil is in good condition not just the water. If the pH is fine then the next option is Calcium Toxicity which inhibits Potassium uptake - from the looks of your plant it is very unlikely but still possible, to deal with that try lowering your "Micro" dosage by half. Hope this helps! Good luck and happy growing :)

I had something similar and i found deficiency information to lead me in the direction of phosphorus deficiency. Also to be safe make sure your ph is good and roots are healthy....roots problems can mimic many conditions....good luck.