What type of medium; soil or hydro? Soil What brand and type of soil? Fox Farm Ocean Forest/Perlite Indoors or outdoors? Indoors What strain? bagseed How old are the plants? 4 weeks What type of lights and how many watts? 8x42Wx2700K CFLs How far from the lights? < 6" What is your watering frequency and source of water? 2-3 days as needed (when they feel light) tapwater left out 24hrs What, how much and when was it fed? NPK? 1/4 strength Grow Big (6-4-4) a week ago, full strength Grow Big, Big Bloom three days ago What is the medium/runoff pH and PPM if in hydro? about a 6 What are the temps and humidity in the room? daytime upper 70s, night mid 60s What size pots? 16oz party cups Any bugs? Look real close. nope Any other pertinent info? Would be here Plants are exhibiting brown spots towards the tips and sides of the lower fan leaves and is working its way upward (I think). pH dropped big time after feeding 3 days ago. The deficiency showed the next day. Yesterday I overwatered a tad with pH up and got the runoff up to about six. They're a bit droopy from that, but the newer growth is still mostly unaffected. What's wrong with my plants and what should I do to fix it? Pics are in my journal here (how do I link them in this thread without making them enormous?)
first get them out of those cups and into a gallon at least. run some water with a ph of 7.5 and then measure your runoff. your shooting for 6.8. you need no nutes for at least a couple weeks as ff has plenty to start you out. add more and your going to burn them which is whats happening. when you mix water to feed ph it at 6.8. hope this helps.there most likely rootbound with bad ph.
I'll water them first thing tomorrow morning. I don't want to overwater but I imagine fixing the pH is more important? How important is it to get them transplanted asap? I was planning on keeping them in the party cups until sex showed and then transplant the top two or three females into 1.5-2gal bags. They're about 4 weeks old, 1 week in 12/12. Will they survive until we know which are the females?
If you don't transplant you will miss out on a lot of growth, also if you have a lot of root around the edges of the cup they will be the first thing to dry out.
pH fixed it! Watered the hell out of it yesterday and they came out today looking like this http://forum.grasscity.com/attachments/micro-grows/532801d1297053128-adaptables-second-cfl-micro-grow-pics-img_5714-jpg