Don't mind the questions at all if ye don't mind a few back and a ramble
Different stains and setup make a big difference, these ak's are well capable of producing more than they have done here so i am limited by my mistakes, like temps, but some strains are smaller in general and only rarely give big pheno's. What are ye growing? What size/type of pots are they in? Did ye pot up and when? What light setup do ye have? any ventilation? Whats your high and low temps? Humidity and finally have you ever checked the PH of the water that runs out of the pots? Plant magics organic nutes bring hard water PH down quite a lot, the soil buffers it back up fairly quickly but you can't feed in every watering if yer not able to PH the water every time, in my case i can't be fucked PHing the water every time but i know that on the day of feeding the PH will drop to around 6 on run off, 2 days later on watering PH runs off at 6.5. 2 days later on watering it runs off at 6.8. Then back to a feed taking it down again. Because i've watched it in the past and am very confident in the quality of plant magic soil's ability to buffer the PH i tend to ignore it until i have to rule it out as a problem. other people swear by PHing in soil all the time but i;m too lazy but if i had to then i would and may just be the cause of your problem.
I'd love to be able to give you an accurate answer but the truth is i don't measure. at first i used a syringe but i just ended up making more mess so i fill a 10 litre water bottle almost to the top, The last feed they got was all bloom and it was a their strongest dose, to try and guess at the amount though i'd say about 2-3 tablespoons worth. At the begining it's just the lightest pour into the bottle i can do which is prolly about teaspoon then it just gets bigger pours or little pours from multiple bottles from there.
For example, week 2-3 and 4-5 they will get a mix between grow and bloom, prolly about 1 or 1.5 tablespoons in the 10 litre in total, 1st one would be .25 bloom and .75 grow, the second would be 1 bloom and .5 grow then scale the grow down and out as they bloom rises and the total rises. I judge it based on the tips of the leaves. this grow gave me virtually no yellow tips and only started getting nute problems when temps were down at 50 and they couldn't get any phosphorous.
If yer using plant magic soil and not potting up i'd suggest a tea or top dressing of something fertile at about week 3-4 and again at about 6-7. If your doing organic, try a dose of bat guano and worm compost tea or just work some into the top of your pots as there should be some space with the soil compacting with watering.
Plant magic's boost isn't quite a fetilizer but it does the same job, it makes yer soil more crumbly so more airy for the roots, it also frees up more nutrients in the soil for the plant. I dunno how this works but i love the way it changes the soil and the rootballs of ones grown with have so far been bigger than those grown without.
Plant magic's essence is also an amazing little product, use it as a spray at least once and you will colonize your leaves with a micro-culture that will protect them from pretty much everything nasty, not 100% but gives them a resistance to a lot of pathogens and makes them unatractive to bugs, the water than run's off the leaves will contain bacteria that will colonise the soil and help break down more micronutrients for your plants to use.
Post up a diary with some pics so we can all chip in an opinion on whether it's too much or too little, how much longer ye might have left to help em finish with a better yield.
