hi this is my first post so forgive a newbee! This is my first growing experience and I think i have a problem

i just purchased a "superlocker" system and I have my first clones growing. they are about 8 inches tall, but am unsure of their exact age.
I have a Citrus Haze plant but it seems the leaves are turning yellow. not from the edges inward but from the "inside out". And it seems more to keep to the new growth as opposed to overtaking the old growth.

I keep the ph around 5.7-6.0 and I'm using General Hydroponics nutrient solution. I'm pretty sure I followed the instructions to a T making the nutrient solution. The light that I'm using is a 150 watt full spectrum high lumen bulb (i think from sun system). To be honest I have not yet purchased a meter to detect the EC level but am unsure of how important that is. (it could be my problem even

The only other thing that I should probably add, is that at first I was worried that 150 watts wouldn't be enough (i thought i read once that "light is everything") and so i lowered the light to about 18 inches above the plants for maybe 3 days. I did a little research (how i found this site) and someone with a similar issue was advised maybe the lights were too close. (why i moved mine back up to about 3 feet above it's maybe been two days since I moved it back up and I'm not sure if I see any changes or if i even should.

any help or advice would be GREATLY appreciated Thanks
Teaga

p.s.
i am currently at work and unable to post a pic of my plant, but this evening I will.
hippiefarmer Reviewed by hippiefarmer on . New farmer in need of a little help! hi:) this is my first post so forgive a newbee! This is my first growing experience and I think i have a problem:( i just purchased a "superlocker" system and I have my first clones growing. they are about 8 inches tall, but am unsure of their exact age. I have a Citrus Haze plant but it seems the leaves are turning yellow. not from the edges inward but from the "inside out". And it seems more to keep to the new growth as opposed to overtaking the old growth. I keep the ph around Rating: 5