What is burning my plants?

[InjectTruth]

SOIL:
What STRAIN are you growing? Chocolate Chunk, LA Confidential, Her Majesty

What was the establishing technique? (seed or clone?) Clones

What is the age of your plants? 2 - 3 weeks, and 6 - 8 months

How Tall are the plants? between 10 - 12 inches, and two feet

What PHASE (seedling, vegetative or flower) are the plants in? Veg

What Technique are you using? (SOG, SCROG etc) SOG

What size pots are you using? (Include how many subjects to pot) 1L for clones, 1 gallon for flowering.

What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?) Homemade mix, 1/3 verm/peat/perlite, with a few tablespoons of dolomite.

What Nutrient's are you using?How much of each with how much water? How Often? *Knowing the brand is very helpful* GH Maxicrop Grow. 1tsp per gallon, about once a week.

What is the TDS/EC/PPM of your nutrients used?

What is the pH of the "RUN-OFF"?

What method of pH test was administered? Using Strips? pH pen?

How often are you watering? every 2 - 3 days

What size bulb are you using? 250hps

What is the distance to the canopy? 8 - 24"

What is your RH Factor? (Relative Humidity)

What is the canopy temperature?

What is the Day/Night Temp? (Include fluctuation range)

What is the current Air Flow? (cfm etc.) 250cfm extraction, 250cfm circulation (inline duct fans from depot)

Is the fan blowing directly at plants? as of two days ago.

Is the grow substrate constantly wet or moist? Moist

Is your water HARD or SOFT? around 175ppm

What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? Tap

Has plant been recently pruned, cloned or pinched? Moms have clones removed every few weeks.

Have any pest chemicals been used? If so what and when? Neem oil, castile soap.

Are plant's infected with pest's? Spider mites, fungus gnats, and maybe thrips.


































Never really had any issues at all before moving to this new location. Now Im getting hammered!

 

[MynameStitch]

For one thing, when you used the neem oil, how much did you apply and how often, neem will burn plants.

Another thing, the pests have got to go!
Check my sick plants guide under pest section to see which ones you got, there is detailed pics of the damage each pest does......

Another thing you said 1 tsp per gallon about once a week, need to know exactly, is this every 5 days? 7 days?

You need to check your run off, you are using peat and you need to make sure the pH is correct; if it's not the plant will mimic like it is being burned; get a pH pen with some calibrating solution and water your plants collect the run off that comes out of the bottom of the pots and make sure you have enough so the pen can get the correct reading.


There is a lot of things wrong here and I am sure not one problem is causing this problem, your plants look as though they are burned, but it also looks like the pH is not correct either.

Pests will aggravate problems too depending on which one you have....

But I will say they do look like they have too much nutrients.... so you have to be feeding them too close together........

 

[InjectTruth]

Well, I gave them a shower, to try to remove some pests and also to flush the soil. I transplanted one, that one actually looks worse now I checked your guide earlier, and I definitely have mites, gnats and thrips. Never seen a thrip, but when I saw the pics of the markings they leave it was unmistakeable.

I will start keeping better track of my feedings, I honestly cant say the exact timing. Sometimes its probably 5, other times probably 7

I will let them dry out a little, then water them and test the ph, although I only have the pool style ph solution from GH.

As I think about it, I have been trying to avoid run off when watering for cleanliness purposes. Guess thats not a good corner to cut! I need to go hydro already Figured a flush would have fixed it, my tap is 7.0 on the money. How low can the peat pull the ph?

 

[drifter421]

looks like nute burn to me.

 

[MynameStitch]

I have never heard of someone having all 3 pests at once, like the ones you listed, I can bet it has happend; but not with that combination you have listed.

Thrips will leave the leaves white, like mites; but bigger; do you see any webbing? Or did you check underneath the leaves?
Do you have any flying bugs?
if you are not keeping track, most likely it's burn like I said it was, I would flush the plants out with a lot of water.


Also do you realize the flowering plants are root bound? 2 feet tall plants in 1 gallon size pots; you will have problems like this with leaves dying due to roots dying in the pot.

How far into flowering are these plants?
If not far I Would transplant into another gallon size so they can finish out there flowering time and you will get better growth rate and the plants will finish; a lot of times root bound plants won't finish and you get nutrient issues out the ass.

Peat stays acidic for a long time it keeps it's acidicness for some time unless a pH buffer is used and once the pH buffer is done up the peat will win.

First I would flush and get them transplanted If I were you, the ones that are rootbound; not the ones that you transplanted already.

btw, where are the ones that were transplanted already? You have pics of them?
Rule of thumb is, you want 1 foot tall plants per 1 gallon size pot minimum, meaning if your plant is 1 feet tall, 1 gallon size pots is the smallest you can go before having issues and that is only a temp solution which the plant should be changed very soon.

 

[InjectTruth]

Well, I tested the runoff from one small plant that begin curling up and burning. The tap was 6.5 - 7.0 going in, and 6.5 coming out.

 

[InjectTruth]

Im most confused because it seems to be happening to healthy clones, that go from the cloner to the peat/perlite mix, and get only tap water. How could those be nute burned?

Is this what sodium toxicity looks like? I might grab a brita filter at least, or go all the way with an RO.

 

[Miko]

InjectTruth, what's the temps like in the room?
Yes, looks like there could be sodium toxicity . Try feeding them some cal-mag and get RO asap. cheers

 

[MynameStitch]

If your mixture is peat based and your pH is 6.5 it needs to come down to around in the range of 5.5 to 6.3

I would bring it down to about 6.0


You can go from clone to peat mix and use one feeding and have nute burn depending on the dosage and if you have them too close together and since you are not keeping track the best option to do is flush and get rid of them pests; pests rob plants and your pH is also off making matters much worse; plants are sitting in nutrients they can't absorb due to the pH being off so the problem is looking a lot worse.

Flush, get rid of the pests and correct the pH after a good flush has been done and then feed every 7 days until they get fully recovered then start feeding them every 5 days but back the dosage a little bit since the feedings are going to be a little closer.