Multiple deficiency!!!!! Big problem..please help

[hellaxgood]

Setup:

DWC 5 Gallon Bucket
strain: white widow
5 weeks old
300 watt CFL veg
400 Hps for flowering
Hydrotron w/rockwool cubes
r/o water
Air pump w/ 2 airstone
2 Fans Top and bottom
Using Fox farm grow big, big bloom, tiger bloom
Humidity: 45-50%
Temp: 74-79 degrees
plenty of ventilation
I have a TDS AND PH METER
Water temp was 72 degree's recently brought it down to 65 degrees
I use AQUARIUM ph up and down???
RIGHT NOW:

PPM:1200 Following FOX FARM NUTE CHART
i know a lot of people tell me 1200 is to high? BUT with fox farm I am being told to follow it exactly!

pH: 5.8 DRIFTS UP AFTER AN HR OR SO


PROBLEM:

Started 2 weeks ago, what started out to be a PH problem had no Ph meter For the first 3 weeks and found out my PH was LOW LOW 4.5 area.

Now that i have all the proper TOOLS i have been taking the proper steps to helping her recover from what was a ph problem that turned into calcium/mg/ ect problems?


SO FAR:
I Have Flushed 3 times changing the nutes all 3 times.

I went with low ppms the first flush and no change at all. I added 1/2 gallon of CAL-MAG PLUS-no help
Foliar sprayed with CAL-MAG PLUS - no help

Flushed again Cleaned with Hydrogen Peroxide refilled with nutes according to scedule -didnt help
added epsom salt
-foliar sprayed with epsom salt- didnt help

Flushed a third time only using nutes changed res temp to 65 degrees and added hydrogen peroixde -still no sign of recovery

PLant is growing new growth just fine actually very very well.. Its growing literally 2-3 inch every day. Older leaves effected first and they just continue to jump from leaf to leaf. What looks like a calcium deff/.. but it could be mg. or p deficiency...i still cant figure it out maybe root rot?roots are brown but might be from FOX FARM Big bloom.. i have been trying so hard to figure it out.

I have to adjust my Ph all the time From rising to about 6.2-6.3

PPM is constantly going up and down Along with the Ph going up?

So please I have seen tons of post with similar problems and none of those solutions seem to be working i dont want to loose her and her new growth is so nice, i just now in a couple days it will be effected also..

please expert advice please....Could root rot cause all these symptoms? is there something i a missing? i Have tons of pics and would appreciate some help. And please If you have had this problem and had succuss fixing it can i have details??? telling me to throw in some epsom salt and ill be fine doesnt work? Thank you so much!!!

[max11max]

PPM:1200 Following FOX FARM NUTE CHART
i know a lot of people tell me 1200 is to high? BUT with fox farm I am being told to follow it exactly!

pH: 5.8 DRIFTS UP AFTER AN HR OR SO

OK whats the TDS reading of your water before adding nutes?

Your pH set to 5.8 is to high for a starting point, make it 5.6 and as it rises add pH adjusted WATER only for the 1st day. Never go over 6.1 - ever

You cannot use full strength nutes for MJ. At least not till it's a mature full size plant, I dont think many indoor growers let them get as big as they do in nature so just think about that.

Looks like you need to get a grip on the pH swings, all the pics look like it's pH related.

The problem with pH swings is the necrosis you cant see in the leaves, close inspection they look nice and green but have what look like hollow holes and flat spots within the leaf structure, you can see this of you hold a leaf up to the light. This will not recover and will slowly die looking like the problem is getting worse, it's not.

[hellaxgood]

My tds is 140 before adding nutes

i recently flushed and my ppm are around 500 now

so i should set it to 5.5 everytime and let it climb

[5starfarmer]

You do realize that the affected leaves will pretty much look like that until they fall off .. what you need to be concerned with is the new growth. You can't "fix" the damaged leaves to 100%.

Advice above is sound. Tho i'd also say your new growth appears a little droopy. Where do you keep your water level? Also how long did you wait inbetween flushes? A day? a week?

[hellaxgood]

I keep the water 1 inch under the net pot and waited 3-4 days in between flushes...i just got some aqua flakes A & B and plan on switching nutes.

[max11max]

Originally Posted by hellaxgood

My tds is 140 before adding nutes

i recently flushed and my ppm are around 500 now

so i should set it to 5.5 everytime and let it climb

You can start at 5.5, see how it goes and the plant reacts, I doubt it will stay there for long, just keep testing and get a feel for how quickly it rises.

You should be able to get it under control.

As you are using R/O you should be adding a little calmag with every water change. You have that just dont over do it.

Also bubble the R/O for a few hours before pH correcting and adding nutes prior to a water change.

[hellaxgood]

i appreciate all the help...