pictures are worth a thousand words, much easier to tell whats going on in natural light not under the HPS, its hard to tell but if i had to guess id say that since early on you used full strength and possibly went a tad heavier then full strength, we all have getting excited and wanting to give them everything, but thats just it, they already had everything for a month + using FFOF/LW since they are already pretty heavy in the goodies and mixing the 2 gives you an even greater and fuller spectrum of nutes already in the soil, personaly i never give anything but water untill the seed leaves (round ones) are yellow, then i start off with 1/4 strength nutes, let soil dry then water, then depending on how the plant is doing either 1/4 strength again or ill bump it up to 1/2 strength, so it takes a while to get up to full strength, especially starting with such a rich mix, its a great mix if yah ask me but it is rich, nothing but water and maybe a basic tea, i get the Stumpys Root Tea mix from HTG, just add to water and mix, really simple, then i bubble it for at least 6 hours or more, adding nothing but the powder mix. ill add in more goodies to the teas as the plants can handle/need more. gotta let the plant tell you when to feed it and not before they tell yah otherwise you run the risk of damaging their young fragile root system, which is what im assuming happened early on. hit them with nutes far too soon and they probably got set back a bit from root damage.
also when did you start giving them the SNS209? assuming you started with this at full strength with the plants at such a young age it could have also over whelmed the roots. i had no problems with the SNS209 but then again i didnt start using it untill they were already being fed full strength nutes so i knew they had strong roots.
sorry that kinda rambled on but all in all id take a stab and say early nute burn caused nutes to lock out and give you what looks like deficencies because the roots are overwhelmed with said nute and locking it out. also are you letting your water dechlorinate for like a day by bubbling or letting the bucket sit.
oops well all thats still helpful but i just realized your growing autos, autos have issues with stress, and especialy since these are autos im guessing the over nute early on hindered them greatly. im also growing autos, i wanna say it was around oct 15th that they broke soil and poked their heads out, i let them go in the veg closet for about 15 days or so after they broke soil and 3 of the 6 had yellow and slightly droopy seed leaves so i mixed up 1/4 strength batch and gave them each about a quart to quart and a half of that solution, that was about 2 weeks ago and just yesterday i finaly fed them full strength and they are taking off like bats outta hell. this "full strength" feeding was 1/2 strength of the Bio thrive Grow, 1/2 strength Bio thrive Bloom and full strength of each the other, CalMg, Bio Weed, Bio Root, Bio Marine, and Bio Bud. in a couple of days ill give them the same mixture again and after that the next time they get nutes it will be full strength Bloom, Bud, CalMg, Weed, Root and Marine. ill continue this until about the 25th-28th of this month, and after that its just full strength Bloom, Bud and Calmg up till the finish line.
wow again sorry for the run on, been hittin the bong a tad lol. i really hope this helps you either now or in the future, remember dont feed till they show they want food, plain water inbetween doses of nutes, start at 1/4 strength and work your way up as necessary, dont let any more then the tipp tip of the leaves to "burn" from nutes or youll have proplems. and especially with autos they cant take stress so wait till they say feed me. im not sure what your previous grow was, hydro or something other then organics, but organic growing is probably the least hands on of all, no need for pH'ing the water as the microbes take care of that, plus the goodies in the soils your using. its nothing like hydro that needs daily attention to make sure things are in balance. with a good starting mix organics can almost take care of its self with nothing more then some good teas added like near the middle of flower. so its alot less demanding, just gotta step back and watch em do their thing, still check on them daily if you can to make sure things are running smoothly, but a good mix to start will feed for a while.
...could you share more of your setup?..Im a lazy stoner like most and rather hit my :bong1: Looks like a nice cooltube..
