Phosphorus or Nitrogen problem?

This is my White Rhino 8 days after flip and it seems to me like a nitrogen or phosphorus problem is causing some of the leaves to yellow.

Couple of the lower leaves:


One of the upper leaves:


Then from my Dream Queen (or Green Crack) plant a few more:


Im running CES currently on transition stage at right around 1000 ppm and 5.9 ph, plants seem to be ok but some of the leaves are doing this. Flood and drain system using Grodan 6 inch cubes.

Hopefully some of you can spread some light on the issue for me. Feel free to ask specific questions to get more information.

Thanks ahead of time.

looks to me like you have perhaps a few problems 1. over nute judging by the tips of a few of the leaves. 2. are you foliar feeding? perhaps pooled water burning leaves. Or finally have you inspected closely for mites?

pic 2 of 5 remminds me of a prob i had - mold - i had been sucking up mold from old carpets with my extractor - check your surroundings - watch out for moist areas near your grow esp carpets

worth a shout

Tla said:

looks to me like you have perhaps a few problems 1. over nute judging by the tips of a few of the leaves. 2. are you foliar feeding? perhaps pooled water burning leaves. Or finally have you inspected closely for mites?

Click to expand...

I know its not spider mites, I religiously check for bugs twice a day after a nasty infection a few months back. Ended up having to bleach the entire grow room and kill everything.

I was thinking possible over nuting but the leave that looks like that is very rare on all the plants, I run quite a few in a room too, so its not that common (maybe one out of 10 plants has a few leaves that look like that). From what ive gathered on forums and the few years ive been doing this Nitrogen was what i was thinking.

Im foliar feeding with liquid light ... just cause ive had some laying around for about a year that i used previously.

pic 2 of 5 remminds me of a prob i had - mold - i had been sucking up mold from old carpets with my extractor - check your surroundings - watch out for moist areas near your grow esp carpets

worth a shout

Click to expand...

I had a small problem with powdery mildew but thats been taken care of. Maybe 4 plants had a SMALL amount on them but they have since been treated and cured.

I know its not carpet because the room is full tile.

Thanks for the input guys, its appreciated.