Quote Originally Posted by canniwhatsis
I've been chasing what looks like N and P def. Mainly P.... figured I'd look..... after 20min of pouring over my root ball with the microsope I found nothing. :wtf: I'm hoping that's a good thing.

I haven't seen any wingged thinggs in my room in several months (believe they were fungus gnats from the new bag of soil at the time) My problem started about a month ago, and is only effecting vege, my bonsai moms to be exact. Flowering has been un effected.

On the plus side I hit my affected girls with a heavy P fert last week and things seem to be improving. So I've got my fingers crossed it was just a deficiency because those little bastards sound like bad f'n news!!!!
Fungus gnats can act as vectors for all sorts of crap that can ruin your grow. I have seen it happen. One day you see these little fuckers flying around, a week or two later your grow is toast with the plants looking like deflated balloons. Root rot/Pithym and Fusarium wilt can occur and these are absolutely devastating, plus as the roots start to rot, your PH levels get squirrelly and you get lockout. It's really hard to bring them back, though I've seen it done by using some pretty extreme methods. Still, in hindsight the grower would have been better off just shitcanning the plants as they were so damaged that more time and money was spent bringing in a mediocre harvest than the harvest was worth.

If you're using RO'ed water, you're probably going to need to add CalMag. RO'ed water will leach the nutrients so depending on your grow medium you may need to adjust. It's usually not nearly the issue with dirt that it is with hydro, but it can be. Calcium/magnesium deficiency can weaken the plant and invite other problems. Also you might want to check your dissolved solids if you don't see any obvious signs of bug damage.