I take it you're being sarcastic about the seeds?
One thing about some ferts is that they don't tell you how often to feed. The bottle might tell you how much to put in a gallon or liter of water but they don't say how often. The grower is suppose to know this. I'm guessing that you've fed too often. What we really need are close up photos in white light, not sodium, and that's not quite the correct questionaire that people usually fill out but it's close. If you've been feeding with every watering, then that's probably too much, especially if you're not using a whole lot of potting soil. Some soils have ferts in them already and can will be good for a while without additions. It could also be that crispy leaves are due to a hot grow room with no moving air, growing in a dry area. It looks like they've been growing for quite a few weeks and are getting close to finishing so I think I'd just give water and try to keep temps down if possible. If the tips of leaves are yellow/brown, then chances are you've fed too much. That's about all I can tell you now but for next time you might try a different method like using Foxfarm's powder fert, like Fruit and Flower, mixing one cup of fert in about 4-5 gallons of potting soil. Just add water and this will take the guess work out.