NEW GROWER NEEDS HELP

[shoulderpain]

So I am new to the whole growing thing, here is my list of products used.
I am using ROOTS ORGANIC SOIL, ADVANCED NUTES, R/O WATER, 600 WATTS HPS AND METAL HALIDE.
I use a ppm meter and a ph meter, I water with a PH level of 6.8 to 7.0 at all times. I started nutes at 100 ppm and am now to 550 ppm on some plants. on most of the plants I am at 3 weeks of flowering. the yellowing started a week ago and after I added nutes yesterday, I woke up this morning and saw a lot of yellow.
PH going in was 7.0 and coming out was 6.5. I already flushed soil with 6.8 water. I hope I am going in the right direction.
PLEASE HELP
I tell you one thing, this has been a lot of fun

shoulderpain Reviewed by shoulderpain on 02-19-2010. NEW GROWER NEEDS HELP So I am new to the whole growing thing, here is my list of products used. I am using ROOTS ORGANIC SOIL, ADVANCED NUTES, R/O WATER, 600 WATTS HPS AND METAL HALIDE. I use a ppm meter and a ph meter, I water with a PH level of 6.8 to 7.0 at all times. I started nutes at 100 ppm and am now to 550 ppm on some plants. on most of the plants I am at 3 weeks of flowering. the yellowing started a week ago and after I added nutes yesterday, I woke up this morning and saw a lot of yellow. PH going in Rating: 5

[shoulderpain]

here are some more pics

[stra8outtaWeed]

what is the ph of the soil?

i have used that soil and i switched to FF ocean forest and it has been much easier....the only roots organics i use is their mychorizea blue/green fromula

if my plants looked like that i would go get new soil.....and repot them!

pull them out and shake the old soil off the roots and wash them with a luke-warm water then repot them with FF if it were me!

[shoulderpain]

what is the ph of the soil?

i have used that soil and i switched to FF ocean forest and it has been much easier....the only roots organics i use is their mychorizea blue/green fromula

if my plants looked like that i would go get new soil.....and repot them!

pull them out and shake the old soil off the roots and wash them with a luke-warm water then repot them with FF if it were me!

I didnt seem to have any problems till today. can you tell what the problem is

[shoulderpain]

I didnt seem to have any problems till today. can you tell what the problem is

well I think I figured out the problem, I ended up adding more nutes but forgot to add the cal mag....


duuuuuhhhhhhgggg

[esc420pot]

well I think I figured out the problem, I ended up adding more nutes but forgot to add the cal mag....


duuuuuhhhhhhgggg

You probley have some nitrogen deficiency trans plant them into new soil with more nutrient.

[Dutch Pimp]

have they ever been transplanted?