Grow Mediums Yellowing and nute burn

[Pyru]

So I've been growing these beans for a couple months, it's my first hydro grow and out of 4 plants two turned male. When they were supposed to be royalqueen autoAK I got from a member on bitcointalk forum

theyve been growing uber slow and are super quick to show signs of nute burn, anything close to 500+ tds/ppm and the tips burn, at first I let the solution slowly ramp to 1000 tds/ppm but I no know that was a huge mistake as the plants had severe root dieback and but .. I think maybe this stunted them permanently

also I've since ordered direct from seed banks and planted one of which in soil thinking I was gonna give up on hydro all together, the soil one already showing hairs which is great but it's displaying the same yellowing discoloration as my hydro plants


http://imgur.com/a/QUfV4

Ive been adding cal-mag, orca, hygrozyme.

today I flushed rez and started with 350ppm/tds of cal-mag solution (tap water is 30ish)

then I added 1ml each of jungle juice grow/micro/bloom to bring it up to 451 tds

i don't know what else the prob could be, ph is spot on at 5.5-6.2 (I start low and let it rise)

does se it need more nutes? As you can see from photos these plants burn easy

 

[DWCocha]

320 ppm of cal mag is way to much ?...what brand do you have ? .You should be adding around 1ml per liter maybe & not making a big difference to ppm .

Looks like you have burned them but there also really hungry & that's whats causing the yellowing / lighter color green leaves .

I recommend making a fresh res ...add half the bottle dose of cal mag 1st ,then you M/G/B Upto 600ppm ,set & keep PH-5.8 or just below .

If you think your lights are too close ,move them up a bit & see how they do bud :Sharing One:

 

[Pyru]

320 ppm of cal mag is way to much ?...what brand do you have ? .You should be adding around 1ml per liter maybe & not making a big difference to ppm .

Looks like you have burned them but there also really hungry & that's whats causing the yellowing / lighter color green leaves .

I recommend making a fresh res ...add half the bottle dose of cal mag 1st ,then you M/G/B Upto 600ppm ,set & keep PH-5.8 or just below .

If you think your lights are too close ,move them up a bit & see how they do bud :Sharing One:

thanks man.

just followed your instructions,
crossing my fingers.

also my light is as high as it can go on the pulley ratchet clips that came with the light, if I remove those I can affix the light directly to the crossbar on the tent and it would raise it maybe 4 inches