Leafs turning yellow

[samba]

HYDROPONICS/ DWC

How long has this problem been going on? 1month, as soon as I move them to flower room
Are you growing in a PVC grow tent? No
What system are you running? (DWC)
What STRAIN are you growing? Critical mass
What was the establishing technique? (clone)
What is the age of your plants? 1month veg + 1month flower,so 2 months
How long have they been in there mixture they are in now? 1 month in flower
How tall are the plants? 2 feet
What PHASE are the plants in? flower
What Technique are you using? DWC?
What substrate/medium are you using?jiffy plugs in net pots
What is the Water temperature? 66F
What color are your roots? White , no slime
What Nutrient's are you using?advanced hydroponics of Holland
How much of each nutrient are you using with how much water? 3 part flower + 1 art micro and NO grow
How often are you feeding? 24/7
How often are you giving nutrients? check rez every day
If flowering, when did you switch over to using Bloom nutrients? 1 month ago
What order are you mixing your nutrients? bloom->micro
What is the TDS/EC/PPM you are using? 0,8
What is the pH of the "Tank"? it keeps dropping,i try to have it at 5.5,but it drops constantly to 4.5, in 2-3 days
Are you sure your calibration is correct on your equipment? yes
When was your last watering? 24/7
What is your water temps? 66F
When was your last feeding change? 1 month
How often do you clean your system: example: 1 time a month
What size bulb are you using? 2* 600W
What is the distance to the canopy? 1'4"
What is your RH Factor(Relative Humidity)? 30%
What is the canopy temperature? 80F
What is the Day/Night Temp? (Include flucutaion range)72/80
What is the current Air Flow? (cfm etc.) 2*399CFM
Tell us about your ventilation, intake exhaust and when its running and not running ?running with lights on,of at other times
Is the fan blowing directly at plants? 1 table fan
Is your water HARD or SOFT? don't know, Ec=0.3,pH7.2
What water are you using? Reverse Osmosis (RO)? Tap
Are you using water from a water softener? no
Has plant been recently pruned, cloned off of or pinched no
Have any pest chemicals been used? If so, What and When?no
Are plant's infected with pest's yes,now,but not when problem started(spidemite)

 

[Skipload]

I would think that if your EC is .8 then you would need a res change daily. they would completly zap any bloom fert N almost instantly. I would recommend not going under 1.2 and even at that nute change every 3 days. Dont try to spike the N at this point. Just use what your using at 1.2 for now. Personally Ive always had bad dry flower weight if my EC is below 1.5 however many sucessful growers laugh telling me this is to. You must have had nute burn on your last harvest

 

[samba]

This is a new strain for me, the last one (Black Domina) was ok with 0.9EC and a steady pH @ 5.5. the pH started dropping with this new strain (critical mass). I moved some new CM in to flower and the new growth is all most white. Some of the lower fan leafs are also dieing away
They are more yellow than the pics make it seem. it must be that the HPS is on

 

[samba]

Pics of nute labels
I've been giving it 1 part micro 3 part bloom
And if i googled right, Stickstoff = (lat. Nitrogenium)

 

[samba]

I now added a bit(10ml) of all 3 nuts and a little extra micro (45 of Nitrogen,if I'm right).
EC is now 1.1, I'll go up little by little
Ph is 6.3
I hope this helps...

Oh, and my REZ is 26 gallons and the DWC "pots" are about 25 gallons all in all.

 

[Cruzin]

to the right of the pics it looks like your burning them.

 

[samba]

to the right of the pics it looks like your burning them.

That shit is harverted already.
I was running on a 0.9-1 EC at the time. Can I burn a plant at that low EC?!
----------------
Got some light off pic's for you

This one has been in the flower room for 6 days. All the new growth is white!