Hi Storm Cooker and Bob Bong. The problem is that i have 4 strains to smoke. AK47, Sensi Skunk, Skunk Special and afghani ( that i don't smoke ). All have had the same mixture which resulted too concentrated. I flushed all at least 1 week before harvest. I can't figure which one give headache or if all give headache, but maybe it's because they are all very strong, that's sure, stronger after curing in jars one month. I will survey that problem. For my actual grow, i put very less nutes and they seem to feel OK. I use my centralized bubbler system wich is 12 gallons of nutes and holds 5 AK47 topped plants. Next week i switch in 12/12.
Thanks
Fhydro