[BuzzBob]

Hey all! --

First, thanks for look'n in on my issue... And trifold those thanx if you could please offer some advice!!!

I was just down checkin' up on my AK-47 Girls {22 Days into 12/12}, and see what may be a problem brewing...

I am running three AK-47s in 5 Gallon Bucket DWC, using GH 3-Part, running the Lucas Formula managed by EC. They are presently at EC 2.0 {1000 ppm @ .5 / 1400 ppm @ .7}, pH ~5.9 - 6.0, Res Temps ~78-80 Degrees F, Relative Humidity ~45%

Here are some pics {Click for larger image}:



Any and all advice is appreciated!!!

-BuzzBob

[BuzzBob]

Additional info/correction: Realizing I had not posted my ambient temps, I just went down and took a reading at flower top level; the closest point of approach to the light. My arm tired holding the probe {as used by HVAC Techs} at 76 Degrees F, and it was still dropping... So temps are not an issue...

Also realized I failed to post my light info. These are being flowered under an air-cooled 400 watt HPS, with a homemade batwing style reflector...


Finally, to correct something I posted {and to put to rest another 'issue' I have been monitoring}... I have been using my Combo TDS/Temp meter for checking my Res Temps. After my arm tired of holding the temp probe when reading ambient temps, I thought, "What the heck!" And dipped the probe into one of the buckets. 59 Degrees F!!!! Brrrrrr.... -- Effectively immediately, no more ice!!! And no more using the Temp Gauge built in with my TDS Meter!!!!


So... With that added/corrected info, any ideas on the lesions I am seeing on some fan leaves?


Thanx!

All parimeters look good to me except your rez temp is too damn cold.If i remember from my home internet growing courses(threads here and og) 68 to 72 is ideal( i think) ikeep mine at 70.I also think i remember reading if rez temps are too warm or too cool the roots wont absorb O2 or nutes as well.So i am guessin you may have a nute lock out due to he cool temps.Anyone agree or am i an idiot?
.

I'd agree with Journeyman, the ice is probably no longer needed. 59F will shock the plant, might want to let the water temp raise some.

As far as the spots on the plants, I would guess the nutrient levels are getting to high and locking out certain nutes. [possibly mag] Right now I am running 1.4-1.6 just fine with no sign of defic. So I seriously doubt it's any kind of defic. Sounds like the PH, and everything else is in order. IMHO, I would give them clear water for a day, then start giving them a slightly lower nutrient regimen.

I will review my pictures to see if I ever got spots on this pheno.

shorts

[BuzzBob]

Thanx guys!!

Ice jugs have already pulled. I have a standby mix of nutes for both systems {one for a Mom, and one for the three in flower}. For the Mom I topped her off directly into her bucket. Temps raised some, but still rather chill at like 60...

For the three in fkower, I pushed the nutes up to the big res, mixed a spell, and refilled the system. Temps there are now at 63.2 F.

I imagine both system will gradually raise back up to close to {or slightly above} room temp, which is ~68 Degrees F.


Re: The lesions... I don't even wanna go there, but any chance of mites? :::Shudder:::

[icough2getoff]

hey bob! I've had the exact same thing on my AK's. I noticed it last grow when I think I was running a higher ppm than I should have, which may have been the cause. (haha I was also worried at first it could be mites just from the bottom of the leaves)

I agree with what everyone's already said. get your res temps closer to 68-72, flush for a day, and use a lower ppm. Good luck man!

Not to be redundant, but low resevoir temps, especially in dwc, can and will cause nutrient lockout. I would expect your problems to disappear after you allow your resevoir to raise to room temperature. But then again... if you allowed mother nature to run her course on your next grow and switched to bio-buckets... temperatures wouldn't matter as much. But I'm just rambling...

Res temps could stand to be up a bit, nute/root lock defineately a consideration. Not mites in my opinion so you escaped the summer mite flu, yea!

The splotchy leave is telling you that there is something you need to address(ph, temps, consentration, nute deficiency, etc..) this time looks like res temps, but it shouldn't spread to any other parts of the plant once you start a corrective path. At least that has been my experience.

I think the plant pics a weak or indicator leaf when growing hydro and uses it to tell ya something needs to be looked at or addressed. It typically doesn't spread and usually doesn't even effect the whole leaf it appears on. The plant basically tells ya better than a meter how it's feelin. The meter just lets you assign a quantitative number to the growth of the plant. I usually prune that leaf after a couple of weaks also so as not to confuse future indicators.

I know I am not the only one that stands in their flower room for 1-1/2-2 hours zonin on my ladies.lol, get to know them bitches.

Anyways, my stoned .02

Tex

[BuzzBob]

Wow! Thanx for all the input everyone!!


Res Temps in the flowering plants this morning {at lights out} were around 65 Degrees F. Much better!!! And I suspect they will continue to rise a little more, as my ambient temps are around 68 to 69 Degrees...

Funny thing {aside from my being such a stoner, and not thinking to double-check the temps my TDS meter have been providing... }, I did not even notice these spots previously, until I was in there digging around, removing a few heavy fan leaves that were blocking light! I've been so focused on the developing flowers!!! LOL...

After first seeing this, I looked around more and found the condition, at varying stages, in maybe a dozen or so leaves... So it does not appear to be very advanced...

I have also found similar spots on the Mom, which is running at a much lower EC level, and is under fluoros...

Yeah, TK... I hear ya! I spend a couple hours with the girls every evening after lights on. Just putsying around... Checking temps, pH, TDS, RH, etc... And just watching them sway in the breeze. Very calming, and therapeutic!!

So, with the temps coming up, and the all of the girls {Mom included} otherwise appearing very healthy, I am going to hold off further action for a few days, and watch to see what they tell me next...


Thanx again everyone for your rapid responses!!!

-BuzzBob

[cough_cough_eer]

Im glad it nothing serious BB. I check on my plant often too. I swear everytime I go in there, I can hear hear her say "are you baack again,"