Dr Gruber
Well-Known Member
Probably the bigger pot. I find the bigger the pot I use, the less nutes I need. At the same stage of development, the 5 gallon pot is probably almost full of roots already, while the 10 gallon pot is only half full of roots. That creates pockets where things saturate because the plant didn't eat the ferts where there are no roots. Then the roots grow and reach those areas with a higher level of ferts, and then you get nute burn, but only at some random places.
I think that's what caused it because it stabilized itself when the roots filled those empty pockets. If it was just the phenotype, the problem wouldn't have corrected itself without you reducing the dosage.
.
Ive been thinking about what you said and it really makes a lot of sense. I checked my notes on this and my other plants in big pots and its happened more then once. Every time its happened was after transplanting to the larger pot. I always wait 7 days after trans to feed with nutes, before that, its just plain water. Maybe I need to give the big pot plants 10-14 days before nutes to fill out????