Burn...or.....WTF?

[SmokeAndBeKind]

Ok.....Heres the background INFO

This is my first grow with Hydro......Hybrid Aero SWC


400 watt HPS hortilux on 18/6, 265 cfm blower

Nirvana Afghani - 26 days old from when the seeds broke ground



here is what is in the res right now in 10 gallons of distilled water
-Pure Blend Pro Veg - 27ml
-Liquid Karma - 19ml
-Cal Mag+ - 11ml
-Silica Blast - 7 ml
-Earth Nectar - 6ml
-Earth Ambrosia - 6ml
-Turantula - 7ml
-Superthrive - 15 drops
The Pump for the Sprayers runs 30 minutes on 90 minutes off in the light cycle, and 15 min on 105 min off in the dark cycle.

I mixed it up Saturday and it ppm'd at 230, then I powerheaded it for 24 hours and switched it out with my reservior water

I checked it today and it ppmed at 211, PH somewhere between 5.7-6 ( Im using the drops to check pH so it isnt too accurate)

6/8 of the plants are showing signs of this, its like necrosis in the margins of the older leaves






They look good other than that, and the roots are doing really good.....




I have heard that afghani is sensitive to over fertilization, so I am trying to take it easy, I am running 1/4 the recomended light veg dose.

Hopefully somebody can shed some light on this problem.....
Thanks

 

[glasspackedbowl]

looks like a Magnesium Deficiency try flush and only adding 1/8 strength then go up from there.

 

[SmokeAndBeKind]

Thanks so much for replying and giving me your diagnosis

You think it is some sort of lockout?

They are doing pretty good except for these spots on the lower leaves





Those pics are from a day or two ago, They have literally doubled (or more) in size in the past week.

That is except for 2 out of the 8 that are doing shittier than the rest, 1 is pretty bad off and might get culled if it doesnt snap back into shape

I will take some new pictures here a little later when I get some time

Thanks again
Smoke

 

[omega7]

It looks like a ph problem. That will cause lockouts. Ive had to run through a couple hydro grows without a ph pen (both times the piece of shit stopped working properly a few weeks into veg)
and they turned out fine. Im sure they could have been better, but both time they seemed to recover the older they got from early ph fluctuations. I'm saying this cause yours seem to have recovered and shot up. I'll usually run plain water through for a day every other week and then just let the nutes lower the ph for me.

 

[SmokeAndBeKind]

Yeah true, I think I will do that 24 hrs of plain water at the end of this week that sounds like a pretty good idea

I haven't been adjusting the PH at all, Like I said in the first post, I just mix the nutes 24 hrs in advance and then power head it until I change it out. The Pure Blend Pro is supposed to be self PH buffering, but from what I have read, it only really works optimally when you are running a dose of 30ml / Gallon, which is about what I have in mine total....

I guess I need to buy a PH pen and start adjusting the PH more often

Thanks for the advice Omega

Smoke

 

[Growdoc]

looks like bug damage to me... check your plants very well

Growdoc

 

[SmokeAndBeKind]

Ok....well now I have 3 replies, with 3 different answers.....

Thanks a bunch Grow Doc, that gives me things that I can check for.

My Camera is finally charged so here are some updated pics from this morning.











As you can see, Overall they are doing really well. It is now just these two plants, and the one more so than the other.

I think what could be contributing to this is when I switched my res out 2 sundays ago, I had to take the lid off of my reservior and set it somewhere with the roots dangling below, and I had it out just long enough that some of the roots started to dry and shriveled a little. I think it is possible it affected these plants more than the others.......But who knows

They are starting to grow in their pre-flowers, so I have been looking them over pretty closely trying to sex them, I haven't seen a single bug in there yet, but I will keep looking

Thanks Again Guys
Smoke

 

[Verite]

I sometimes get that on lower leaves if they come in contact with other things or any residual organics is on them for too long.

 

[Guest]

Do you spray them with anything?


Agnes

 

[SmokeAndBeKind]

Only thing they have ever been sprayed with is distilled water with nothing added to it, but I haven't sprayed them for at least a week and a half

Sometimes water droplets come out the litle gap between the neoprene insert and the top of the netpot and get on the plants, but wherever I have seen these droplets I never see any subsequent burn

I just hope to get at least 2 Females out of my healthy Plants, I already know (95% sure) that I have at least 2-3 males in the lot of healthy ones, so that sucks

Overall though I am really happy with my first hydro grow, I will get all the details down eventually

Thanks Again
Smoke

 

[Guest]

Sooooo... you have NO idea what your PH is? My guess is that it is way too low.

My RO water comes in around 6.0... when adding PBP... Cal Mag, etc... the buffers cause it to drop significantly... in the 4.8 range and it will hold there... UNLESS I use PH Up. I'm not sure what your numbers are on PH... but I would venture to say... that you are locking out some nutes.

At least pickup some PH strips and try to get it in proper range. I would imagine with an aero setup you want to be somewhere around 5.8.

Anyhow... that is my 2 cents.

 

[SmokeAndBeKind]

No...

I am using the General Hydroponics PH test kit, which is a vial you fill half full of water, then add 3 drops of PH solution and it turns a color that you compare to a chart.

So I know that my PH is just below 6, I just don't know precicely what it is

Ya, I agree, that 5.8 is probably where I need to be at

I am starting with distilled water not RO, and my starting PPM's are zero, the starting PH should be 7 but I dont know that for a fact

Thats also the reason why I mix my solution up 24 hrs in advance and then power head it so it has a chance to stabilize.

What sort of system do you grow in Maistre? Only reason I ask is that I hear bubbling the solution slowly rises the PH over time

Thanks for your input Maistre, I am still sort of new to this so I appreciate all the help I can get

Thanks Again
Smoke

 

[Guest]

Starting at a PH of 7should get you nicely into the range with PBPs built in buffers. I was another full point below that with my RO water. Your PH is probably within the comfort zone for your system.

I use several methods of growing... currently ebb n flow on two 3 X 3 tables using PBP and its host of addons, though I'm beginning to phase out the PBP Bloom and have started using Age Old Organic Bloom.

I also grow under a 1000W gallon buckets with a soiless mix with guanos (bat, earthworm and seabird) with a host of other things... kelp... molasses, etc..

Also have a homemade aero-cloner and have grown quite a bit previously in DWC.

In my DWC i did notice a tendency for the PH to drift UP.

Good luck with your grow man... looks like you are getting a good handle on your system. It takes a bit to get it dialed in and this is for sure a great place for info and input if things start to get a bit wobbly.

 

[SmokeAndBeKind]

Thanks a bunch Maistre, I was checking out your gallery, you have some pretty good looking plants. I have a pack of BOG LSD that is going to be the next strain I grow, I hope to get it vegging around the same time I put these Afghanis into Flower. Do you think it would work well in a Scrog?

I am trying to decide what I am going to do with my sickest plant, she (Im pretty sure shes a fem) is getting worse and I dont know whether I should pull her or just see if she rides it out. I am worried about the fact that they all share the same root space, and I dont want one bad plant to ruin the rest.......

I killed the first male last night, and it was a damn good looking plant, they are pretty much all showing preflowers now, and some are getting big enough to tell what they are

The Plants are 30 days old today, I plan on checking the TDS and PH as soon as the lights come on.....

Peace
Smoke

 

[Guest]

I super cropped my LSD... each had 8-10 very nice colas... veg it long enough and i'm sure it would do very well in a SCROG. LSD is a very nice herb... I had a few that smelled like strawberries... I really loved the smell... taste and high of her. Someday I'll get around to running those beans again... So many strains and so little time.