yellow leafs

so im into week 5 of veg and my plants are about a foot high but the bottom fan leafs are bright yellow. i noticed that 3 plants are like this....what should i do? Its not heat stress or nuteburn! Thanks

nitrogen deficiency most likely (yellowing of whole leaf).... or magnesium deficiency (yellow leaves but veins are green on the leaf)..... what nutes are you using? what is your feed schedule? what is your medium? what is your ph?

PainWrek said:

nitrogen deficiency most likely (yellowing of whole leaf).... or magnesium deficiency (yellow leaves but veins are green on the leaf)..... what nutes are you using? what is your feed schedule? what is your medium? what is your ph?

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im just using grow nutes from the hydroponic shop. they are their name brand ones and were suggested by the dude at the shop. im also sing promix as my medium and my water before going into the medium is using a 6.5-7 ph. i water every 3 days or so, i usually probe the soil with my finger and if the first 2 inches is dry i water!! can i just take those leafs off as i took some of the smaller leafs off...thansk

its probably a nitrogen deficiency especially if its starting from the bottom up.

use nutes that are higher in the N part of the NPK or supplement the nutes you are using with some epsom salts or something

i jjust checked and it looks like the whole leaf is yellow. im also using hydro thrive as well. i just watered the plants that had the yellow leafs with just plain phed water. hope this works. thanks

what is the NPK of the no name nute and the hydrothrive?

are you growing in soiless(hydro) mix or soil?

so i got some epsom salts...how much do i mix with water when feeding ?? all info will be appricated!! Thanks