Small Necrosis on young plants

[Lawladash]

I'm not sure why, but I'm getting some brown spots and yellowing on my young plants.

What is your experience level? (first timer, novice, experienced...) I've done an outdoor grow and an indoor, so still learning.

Your Equipment:
.1) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's) 1000W MH and 3 T8
.2) Distance from tops? MH is almost 2 feet and the florescents are about a foot
.3) Reflector type? (cool tube set-up, bat wing, enclosed reflector, bare bulb...) Bat wing on the MH and just a regular shop light for the T8s
.4) Is there a consistent fresh air supply? Yes
.5) Do you have an exhaust fan and a circulation fan? I have an exhaust fan and a portable AC for my circulation fan.
.6) What are the bulb wattages, kelvin ratings, and schedule? MH is 1000w and the T8s are 32W(I believe) and schedule is on 7am to 1am

Your medium:
.7) Specific brand and type of soil, (coco, peat based soilless...) and anything you've added to it. (vermiculite, perlite, worm castings...) Fox Farm Ocean Forrest, nothing added.
.8) Size of container. They're small containers, not 100% sure.
.9) Did you use peat pucks (or similar) to root clones or germinate seedlings? No

Your nutrients and water:
10) Source of water? (tap, bottled or filtered) What's it's ph before adjusting? Tap, ~7.2
11) Method of checking water ph. (ph pen, test strips, aquarium test kit...) Pool PH/Chlorine test kit.
12) Method of adjusting water ph. (phosphoric acid, white vinegar, hydrated lime, PH Up...) I don't think that I need to adjust the PH(Should I?)
13) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. I'm using Earth Juice Grow, Catalyst, and Bloom. Grow is 1 TBSP, the others are 1 TSP per Gal. Feeding schedule was every other, but now It's about twice a week.
14) How often are you watering between feedings, and how much per watering? I'm watering every day, so about 2-3 times between feedings
15) Any additives or tea's? (Superthrive, CalMag, molasses, Mother's Earth...) None.
16) Are your ph levels stable, or do they fluctuate? I've only periodically tested my PH, and it's been consistent within a .2 range.
17) What is your ingoing water's ph? ...your runoff ph? Ingoing is ~7.2, I don't know about the runoff.
18) Do you foliar feed? If so, with what, how often, and at what time do you spray? I don't.

Your growroom:
19) Indoors or outdoors? Kind of a hybrid, it's in a shed.
20) What size of closet, room or hut? 10x10
21) What are the temps and humidity levels while lights are on? ...With lights off? Temps stay around 78-82, and around 45-50% humidity.
22) Have you seen signs of insects in the growroom? I did in my last crop, however before starting these new ones I scrubbed the room down with organic insecticides

Your strain:
23) What strain are you growing? (Indica dominate or Sativa dom?) I'm not sure about the blend, however, it is a Northern Lights strand.
24) From seeds or clones? Seeds
25) Is this an autoflower strain? No it isn't.

I had multiple problems with the first go around which lead to just under 3 ounces for 10 plants, so I'm really, I mean REALLY looking to avoid that again in this one. I've got 16 plants going in this one, however the 16th is a random seed found out of a bag.

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Lawladash Reviewed by Lawladash on 07-17-2011. Small Necrosis on young plants I'm not sure why, but I'm getting some brown spots and yellowing on my young plants. What is your experience level? (first timer, novice, experienced...) I've done an outdoor grow and an indoor, so still learning. Your Equipment: .1) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's) 1000W MH and 3 T8 .2) Distance from tops? MH is almost 2 feet and the florescents are about a foot .3) Reflector type? (cool tube set-up, bat wing, enclosed Rating: 5

[Purple Daddy]

Have you checked for mites or any other critters?

[Lawladash]

I've used Neem concentrate about once a month even without seeing anything and if I do see any kind of signs I usually spritz them once every few days or so until the signs are gone. So I don't think it's bugs, but I will spritz them next time I'm out there a little later today.

[Purple Daddy]

I think you're over feeding and over watering them. I'd let them go a day without anything then start flushing your soil for about a full day multiple times then let them dry out, just use water and maybe superthrive for about a week and see how they respond.

Honestly? Keep it simple, I'm not exprienced with some of these exotic nutrients people are using and the schedules they are following, had a friend using the foxfarm schedule and she had all kinds of problems.

I'd suggest after flushing to go very, very light on nutrients at first, maybe 50% of what you were using and see what results you get. I wouldn't use full strength until they are larger and looking healthy. The old growth will not repair itself so watching it for improvement won't help, keep an eye on the new growth and leaves near the top of the plant. I sometimes trim off all the damaged leaves so it's easier to tell if any of the other undamaged leaves are having symptoms. I'm hardly an expert and have had to learn from mistakes due to either impatience or inexperience. It's not as easy as dropping a seed in the bucket and watering it but it's not much more complicated either. I just think people(including myself) tend to over think the process and that may cause more problems then solutions.

[Lawladash]

Ok, I'll give it a shot. You'll have to excuse my lack of knowledge with all of these terms, but what is flushing and what's the best way to do it? Does it differ if I'm using soil? Any additional information is always welcomed. Also, thank you for your quick responses and input, it is greatly appreciated.

[cigarettes42]

i find it funny that everyone has failed on reading this guys trouble shooting form and just threw out answers and suggestions. from what ive read not checking your in/out ph is making your soil out of whack!!! when you add nutes to soil with a bad ph it will cause the roots not to absorb any nutes and when you try to correct it, it will burn the damn plant. 7.2 is a very high ph of water going in. i bet you get like an 8.5 runoff. i feel you should flush with ph corrected water and correct your soil ph before doing anything.

[Lawladash]

The hydro shop near my house isn't open on Sundays, is it detrimental that I get this done today, or can it wait until Wednesday when I have a day off work? If it can't, what can I get at a local Wal-mart or Home Depot that will give me my desired PH level? I'm almost certain that I can't use the same PH adjusters that are used in a pool. Yet again thank you for your input and suggestions.

[Lawladash]

Ok, after looking at my local Home Depot's website, I see the meter and PH down I want to use, how do I lower the PH in the soil? Will it automatically adjust with the corrected water? Quick replies are appreciated as I'm about to go down to the store here soon.

Edit: I'm going to pick up some Blood Meal, I've read that this will do the trick for what I need.

[LetsSeeYa]

I am using the E&J too and had to step up the dose. Its my first run with it and im not to happy with it. I believe it lacks in Nitrogen as i hit them with a small dose of some all purpose crap and they greened up and now look nice and perky. But i will not use it again, but iv upped the grow with the E&J and kept the bloom the same. They really looked better faster then i thought they would, but of course the N shows fast IMO anyway. But my point is they much better now and new growth is kicking out nice.

I have heard the E&J lacks N, but not till i bought the line. Here is a different schedule i found that these people really like and works for them, but its on you if you use it. Man i will get it later, i cant find it, but it will be tonight.



LSY

[Lawladash]

Just got back from a trip down to Home Depot and Wal-Mart. Got some Miracle Grow Blood Meal, which is a Nitrogen supplement. So hopefully this will alleviate all of my babies' ailments. I'll post some pics in a couple of days either if they persist with their problems or get better. Hoping for the latter!