Different Growth Rates in RDWC – Day 15 Gorilla Haze (First Grow Issue?)

Some parts are hard to judge -- leaves touching or extremely close to the often wet clay balls will show all sorts of symtpms due to impact on transpiration and when physically touching, absoring more nutes locally than it would receive had they entered through the roots properly. But, even the new growth is looking a bit meh. This particular formula is not working well, but this plant is robust and even in less than ideal conditions can still turn out okay. You can use free apps or websites to find these suggested ratios and concentrations. 120-130 N 40-60 P 180-200 K 100+ Ca 75-80 Mg 100ish S That's a safe low start that should allow the leaves to gradually stock up building blocks as well as provide for as much growth as your enviornment and genetics allow. If they show any greater need, adjust upward in a proportional manner. Calculate from gauranteed analysis labels, don't rely on EC. EC has 20 different conversion factors to ppm that you might as well pick a number out of a hat (exaggeration but still conceptually true, lol). EC is also important for different reasons, but just doesn't convert accurately to PPM. The brand of TDS pen you use will make a 30-40% difference (500-scale to 700-scale) in the ppm value you see converted from EC... just the brand of the device and no logical reason.. the conversion from EC to ppm is a big grey area. Gauranteed analysis labels are a gauranteed minimum. There's some fudge involved here, too, but it's still more accurate. Depending on the ingredients, it'll be incredibly accurate -- which in the case of soilless/hydro nutrients, they should be very accurate calculations. Ammonium nitrate is a rose is a rose, etc.. There's no circumventing its molecular formula as far as percent of mass for N. If you used jacks 3-2-1 you'd have no problem running DWC or any hydro/soilless as your first grow. Minimal adjustments needed from instructions, if any. Every garden has some different variables, so some adjustment is always necessary for nutes and lights. A lot of these brands have esoteric formulas that might work well for a few plants, but lack consistency, hence people think hydro is difficult to figure out, but it really isn't if you avoid the bro science stuff and brands with cartoon graphics on the labels like it's some sugary cereal brand marketed to toddlers.

Hello, dwc grower here :) always happy to see people trying out hydroponic growing :) Can you tell a bit more about your set up? ec/ ph/ temperature and humidity? It’s not possible to answer correctly without those informations. You don’t need to worry too much because nothing is lost here, but I wouldn’t recommend to wait another week in hopes that it gets better. This is one of the key differences between soil and hydro - the timing. Have a nice day!

Looks to me as if your PH is off. Should be around 6 at this stage.

Totally normal — and especially on a first RDWC run, this is nothing to beat yourself up over. A few points: Even if all plants are the same strain, they’re never identical. Different phenos, slightly different root development in the first days, or one site getting established a bit faster will already show by day 15. In RDWC, once a plant gets a head start, it often keeps it. Things that can add to the difference: One net pot rooting into the system earlier than the others Slight differences in water movement / oxygen between sites Minor variations in light spread across the canopy Your feed sounds reasonable and not excessive for this stage. 1 ml/L Canna A+B plus a touch of Cal-Mag is pretty safe early on, so this doesn’t scream “nutrient issue” to me. What I’d do: Don’t chase it by changing nutrients or EC plant-by-plant Let them go another week — RDWC often evens out once all roots hit the flow Later on, you can use training or plant height management to level the canopy If they’re all healthy and green, you’re doing fine. Uneven growth early in hydro is more common than perfectly uniform plants — genetics and early root timing play a bigger role than most charts admit.

1st grow in a rdwc, got balls.