Is this a nutrient problem or something else?

Hi Guys,

Here is the story followed by piccie.

I got a cutting from a friend and it was in a 4 inch pot. It was previously under some large CFLs. It had not been fed at all so far.

I have had it for a week under 600w HPS in a grow tent and have transferred it to a larger pot and obviously heaps of fresh soil.

The leaves have now started to change for the worse. Turning yellow. The plant has had zero feed so far. This is because I wanted the plant to grow to 10 inches then do a SCROG so I thought it would grow to that size using the nutrients in the soil alone. Then when the light go to 12/12 I start with the Flowering Nutes.

The guy at the grow shop put it down to the fact the plants got stressed at being introduced to 600w lights so quickly and have yet to have a perfect root system, so on his advice I have raised the lights to the top of the closet.

Anyone got any ideas. At the moment the plants are 7 inches tall.



Thanks for any help you can offer.

Good advice on moving the light up, it's time to give that lady something to eat, not full bore but something around 25% recommended on your veg food. She is starving, feed me, just don't over do it.

The yellow in the older leaves is likely an N diff right from the get go , older leaves is history and new leaves are present. Old leave tell you what happened last week and new growth shows you whats happening now. Micro elements tend to show in the new growth and major elements tend to show in the old growth.

I never recommend treating for one element because some elements need other elements to be available to the plant, so if N is to low it locks up M and now you have an M dif caused by low N, see what I mean. you treat for M but the issue is N. You kill your plant.

Always try to use something that will cover all the basses and your plants will be happy.

those plants need nutes bad ive had seedlings yellow when they were only 2" high for not giving them nutes those plants are starving

I agree with Woods and Tree King. Go ahead and start your feeding schedule.

where's the perlite. mix looks dense. what kinda drainage does that pot have?
re-pot to a mix with 30% perlite, and use a nursery pot type container. re-assess.