Mystery Problem

I am noticing a problem and realy could use some help. I am seeing my plants lower leaves yellow between the veins and die around the edges. I treated by adding epson salts to the res and started floral feeding them a diluted solution of epson salts and nutes. The problem seemed to stop until i stoped floral feeding. now it looks worse and I dont know what to do. If you want to know the details of my grow its listed in the grow journal section under George W. Grow

some of those lower leaves aer gonna die off..from lack of light..i dunno if i would say thta is a mag def though

Well my ph has been on the high side around 6.8 and the temps in the room were in the high 80's for a while until i left the door open the last couple of days and brought them down to the low 80's. I am wondering where my lockout is comming from bc everything seemed fine for the first two weeks.

I have some new pics of the girls. They are looking slightly bettter but little has changed. The spread of the difeciency has stoped I think but im still trying to figure out what caused it. To make the diagnosis easier I have broken down what I was doing before.

Grow room Temps: High 85-90+
PH in Res: 6.7 avg
Nute Strenth: 700ppm (Was using drinking water with baseline ppm of 130)
Medium: Soilless mixture 3" mesh pots
Nutes: Super Thrive, Bcuzz Grow, Flora Nova Grow.
Watering: Every day for fifteen minuets drip system
Now I have changed a few things

Grow room Temps: Better 78-82
PH in Res: 6.0 avg
Nute Streanth: 450 ppm grow (Switched to Fox Farm Grow big)
150 ppm Cal Max
15 ppm Base line
45 ppm Super thrive and bcuzz growth stim
Total 660 ppm
Also added a root culture
Watering: Floral feed daily watering when soil is dry

Please can anyone figure out what I was doing wrong and are there any sugesstions on things i should be doing.

Some people said to flush others said to back off nutes some say mg and cal difficiency others said ph. that just sounds like everything is wrong lol.

I want to know what locked out the nutes from the plants.

I think you are taking good steps. The PH surely was high, 6.0 seems still a bit high but probably better then making a huge jump down to 5.6 all in one. Your temps are a lot better too. The water is a big improvement, along with the cal-max. It looks like you are doing hydro, but you apply 'soil' logic when it comes to watering and ph, why?
Good luck mate,
Unity
I just checked your journal
Don't use water from a water softener, the salt will throw everything out of whack! RO makes for consistency and predictability. I'm scrogging some Auroras right now. What is your thought behind watering only once 15min. a day?
My drips are on at 60 sec. on and 4min. off. I do that so I do not get salt build ups in my medium from it drying out or concentrating. Auroras will take the watering no problem, they'll be a bit water logged, but in a good way, and only while they still have an under developed root system.

Thanks for the info. I feel that I know what happened to my plants and now I have taken steps to correct the problem and they are looking better. I think at first my PH was to high and the plants were showing sings of a MG or CL difeciency. I increased the ppm and added epson salts to try and fix that problem. However in doing so I gave the plants a slight nute burn. Freeking out I tried everything to fix it on my own but I owe credit to the people on this sight for educating me on what I was doing wrong. Today I flushed with PH adjusted water only and floraly fed a diluted nute solution. I think the flushing will get rid of any salt build up from my previous mistake. I will also have adjusted my ph to around 5.9 to prevent furthur lock out. Hope the next week will show large sings of improvement.

Thanks to all that were willing and able to help.

Smoke till you Choke

George W. (and by the way in my parts George W. is another name for weed not any political affiliation on my part I dont believe in a goverment that has no room for weed in their agenda)