Yellowing of my leaves!!!!!

I'm seeing yellow on my a few set of my leaves could it be my nutes are too much or humidity i need some help bad

take some pictures

Sounds like nute problem. How much food do u give em and how often?

i'm using botanicare pure blend pro grow 3-2-4 at 7.5 ml aqua shield 5 ml superthrive at 1/4 tsp ph at 6.0 they are in coco coir soil 5 gal smart pots i have pics but im a fuckn idiot and don't know how to upload them any help can't lose my babies.

bring up your ph 6.5 to 6.8 and back off a lil on superthrive should be in the 1 mill per 1 litre of water

ferts need ph to activate

nutes ph or overwater are your most likely culprits. also thats a bit heavy on the superthrive, you should only use a few drops per gallon a couple times through out the grow. i like to use it after pruning, training, transplanting or switching light cycles. its more of a stress preventer an vitamin supplement than a nutrient.

dude i appreciate the feedback also how often do you feed and water them i have a sunsystem 400w switchable right now im running 400w mh in a 48x48x78 grow tent 4 plants 2-blue god 2-purple kush 2nd tent is same size but i have a dwc 4 gal system and 3 5gal smart pots of silver haze and white widow all under 400w mh bulb and reflector nutes currently botanicare veg stage 18hrs temp 78 hum 62 how is this environment

water when plants are dry pick up the pots if light then water and if other pots are still a lil heavy just give it a minor amount this way you wont be chasing plants get them back in line so all pots are dry then water and your temps an humidity seem fine remember once you go into flower your goin to want to drop your humidty in second week to 40 - 50

your environment isnt too bad, some would say your humidity is a bit too high but that really comes down to grower preference. i like it a bit lower to allow the plants to transpire more and therefore metabolize faster. too low and the plant closes up it stomata to save moisture, too high and the plant cant breathe.

First of all, Coco Coir/Fiber is a hydroponic media and should be fed as such. The appropriate pH for coco is 5.8.

Coco can be used as the primary media to create a soil as well when including organic materials. This is the basis for Roots Organic soil. In that case you should be feeding at more along the lines of 6.5 to 7.0.

With Hydro pH levels being between 5.5 and 6.0 with 5.8 being ideal, and soil being 6.2 to 7.0 with 6.5 being ideal... you're not really in the right range for either method. This is likely making elements unavailable for uptake.

In addition to the pH value your planter of 5 gallons of coco is tremendously large. Large enough to grow 6 foot plus plants. The coco retention of moisture at that volume of coco is likely far too high and you may simply have too much media, too moist, for too long. I use 3 gallon smartpots and find them to even be too large. So I only use 2 gallons of space in the 3 gallon, this creates a wide base that demands frequent watering. Coco, as a hydroponic media, does not need to be in the same volume as soil for growing a similar sized plant.

I suggest you decrease the frequency of waterings and increase the volume of run off you are collecting. This can allow the coco to retain more air during the drier periods and stimulate root growth, but is only acceptable if you are watering at least once every 100 hours (every 4 days). Too infrequent and you will develop other issues.

Depending on the kind of "yellow" you have there are many different solutions to apply. Since I cannot be certain of any I suggest focusing on developing your root system as best you can to facilitate the growth of the plant and uptake of nutrients when in a tremendous amount of saturated media.

Also, when you water, dissolved oxygen in the solution replenishes the aeration value of the coco. The spongy physical structure of the coco allows it to retain a great deal of air but if you are going a very long time (more than 5 days) between watering because the coco just stays too wet the amount of air in the media will be reduced significantly. It is true that coco doesn't need to be cut with perlite, or another aeration media, because of this principle. What that depends on more is the frequency you are watering and the distance between these could result in drowning your root system which has not developed throughout the media.

Hence, with coco, size does matter. Ideally you don't want more media than you need. For most growers, an average 3 foot plant can be grown in just 2 gallons of coco, and the media will require frequent saturations. This helps keep the amount of air available to the root system high as it never becomes "stagnant."

Incorporate this knowledge and address your problems accordingly.

Bro i am really stoked about the knowledge u have blessed me with, the coco grow is new to me so this is exactly what i needed, your words of wisdom won't be in vein puff puff and pass the knowledge of truth as i learn i will do the same salute comrad.