HELP! what the heck is wrong with my plants? 6 feet tall and need to flower BUT....

First of all i have to i have to say im a pretty damn good grower for my first time. "Gucci high-roller" is my grow room name My sexy big booty bitches are 6 feet tall. So F-ing hot. Ive kinda got the hang of it until i started to notice the lower leaves were turning yellow, wilting then dying . It started at the bottom and keeps moving up. I will try to be as detailed as possible sense i have kept a feeding and watering log sense day one. Being a stoner Sometimes i forgot to write down everything. I took a lot of pictures and posted a video on youtube. Can we post video's on here? k for all you serious growers that know what they are talking about please tell me what the hell is wrong.

here is my youtube video its only six min long and you get to see how rich and big my house is : Thanks daddy im a spoiled white kid that grows pot this pot is my ticket out of the guest house so please help me leave lol seriously!



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watering: Every 3 to 4 days or when needed

1. reverse osmosis water
2. ph 6.8 PPM 400 to 500
3. 1/4 SuperThrive per gal.
4. 1 teaspoon per Gal. CaliMagic aka cal-mag
5. 1 teaspoon per Gal. Diamond Nector ( Sense day one I've been using the Diamond Nectar 1 teaspoon per Gal every time i watered. I just read last week im suppose to use 3 teaspoons every feeding when they are big plants like mine )
6. two or three weeks ago i bought the super tea bat guano i was hoping it would repair the yellow leaves and i thought it did at first but i think it only slowed them down, some of my plants are fine but some look like shit. i used a small dosage at first of 3 tablespoons per gal and after that the leaves went perky like they use to be. now the perk up off and on. how often should i use the bat guano?? i used it in every watering for for 2 weeks sometimes the recommended usage of 2 tablespoons per gal and sometimes just a half tablespoon per gal

Feeding the big plants: every 2 to 3 weeks but not for the first month

1. bioThrive after a month i was told i should start feeding my plants so i read the directions and used the lowest recommended amount 2 teaspoons per gal the ppm went from 400 to 800 ppm and burnt the shit out of the bottoms of my plants. i hate biothrive i might stop using it but now i only use 1/4 to 1/2 teaspoons per gal
2. after the plants got burnt i used about 2 or 3 gallons of reverse osmosis water mixed with the "sledge hammer " and its suppose to remove the salts or something. my plants are in seven gallon smart pots. was that enough sledge hammer water to wash out the salts? i didint follow the directions because that a shit load of water per plant. call me lazy i call it smart.

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1. Clones:
   
2. reverse osmosis water
3. ph 6.8
4. PPM 200 to 250
5. 1/2 teaspoon per Gal. CaliMagic aka cal-mag
6. 1 teaspoon per Gal. Diamond Nector just stopped using it on every watering
7. 1/4 SuperThrive per gal.

i got my clones two weeks ago and they were a little burnt from the previous owner now they look all my other plants with yellow leaves on the bottom what the heck am i doing wrong??