Iron deficiency?

I have narrowed the possibility down to two things, although there are probably a myriad of underlying reasons why these two potential problems occured. I overwatered and my pH was too low, the plants are rootbound in their little 3 gals. There may be more underlying reasons. Anyway, I narrowed it down to either an iron deficiency or light bleaching. I'm leaning toward Iron deficiency. I sprayed with Maxicrop Liquid seaweed plus iron and in two days, the yellowing went away. So it's likely Iron Def, but there are a bunch of different minerals in that seaweed, so idk. The yellowing was only on the bud sites, it was only affecting new growth. here's the pics. two are under led, 1 is under dim daylight.

I don't think anyone can see anything from those pics, but if you use iron, spend the money to get FeEDDHA. It will continue to work until 9.0 pH. Great stuff.

There is just yellow on the new growth; everything else is healthy green.

Jumfrey13 said:

There is just yellow on the new growth; everything else is healthy green.

Click to expand...

diagnosing anything rootbound Is a fools errand man..
Start with that first.

I don't see any roots on the drain holes, but i'm just assuming they could be because i vegged them a little long in those 3 gals. So, what do you think it could be if they are not rootbound? am i right about the iron d or is that light bleaching?

Just looks overwatered a bit. If you flip to flower the tops start to take off, quick new growth can start off as yellow and darken as it matures. If the veins start to yellow out and stems get stiff then yeah, could be sulfer. Your plant looks normal.

Thanks SPLFreak. I did learn that i have been overwatering these. I let them dry out, sprayed that seaweed and the tops darkened up. I'm 12 days into flowering now. buds are looking good. They don't smell much though ;( . Hopefully in aweek or so.