Yellow leaves/Brown Spots (Troubleshooting form included)

[txbudenthusiast]

Dear fellow enthusiasts,
I am at a loss with this issue. I have tried to research this myself and can't come up with an answer. I could use some help from experienced enthusiasts. Not sure if I am overwatering or if its a ph issue or maybe even something else. From what I have read it seems that is possibly one of two but I don't know and don't know how to correct the problem.


Equipment
1. Lights: 90 watt LED UFO light
2. Distance from tops: 12 inches
3. Reflector type: enclosed reflector material
4. Air Fans: Yes I use 2. One brings in fresh air. The other sucks out warm air
5. Yes I have an exhaust and a circulator fan
6. 90 watt LED UFO light 24/7 right now

Medium
7. Hydrotone (yes, I rinsed it before I used it)

Nutrients and water:
10. Source of Water: distilled water
11. Method of checking water ph: I use a test kit and test twice a day morning/night
12. Method of adjusting ph: PH up and PH down
13. Nutrients: I use GH Flora Micro, Flora Gro, Flow Bloom (I started very low and titrated up yesterday, but it is still under the recommended amount)
14. Amount of watering: I use a drip system and I had the watering on constantly up until yesterday and feel this could be my problem so I turned off watering since yesterday
15. Diamond Nector and Floracious Grow (just added yesterday for first time)
16. Ph levels stay relatively stable. I need to adjust once or twice mid week once the back up reservior is used.
17. ingoing ph and your run off: In going PH shows right aroudn 6 according to the color for the testing kit. Does Run off apply to hydro as well?
18: Foliar Feed: No I don't. Not sure what that is
19. Does your ec/ppm show a rise and fall when you do your daily PPM check? I don't check my PPM daily, but I checked yesterday and I remember it being at around 131 and now it reads 79 on the TDS meter. So I guess it does fluctuate

Your Grow Room:
19. Indoors or outdoor: Indoors
20. What is the size of closet, room or hut? 36'' tall x 31'' wide x 20'' deep
21. What are the temps and humidity levels while lights are on? current temp is 81.3 degrees and does not fluctuate much, does not get lower than 79 and never higher than 83 degrees. The current humidity is 43% RH
22. Have not seen signs of insects in the actual stealth box

Strain
23. What strains are you growing? Northern Lights and Pandoras Box
24. From Seeds or Clones? From seeds
25. Is it an autoflower strain? Not that I know of

This my first grow and I have read a few threads and seen the "Marijuana abuse" article. I am using a drip system that had a steady drop of about 2 drips every 5 seconds. I used this until yesterday evening because I thought overwatering could be my issue. The roots have now reached the reservior and have been doing so for about a week. I have flushed them twice since germination. Last Saturday I flushed them and ran plain distilled water until Sunday because I was switching nutes and did not want to cause a problem. I flushed them again yesterday because I changed the water and titrated up the nutes. This time I used GH's flora clean along with the distilled water while flushing and only flushed for 2 hrs like recommended on bottle. I did use less than the recommended dose as suggests for younger plants. I don't think my PH fluctuates all that much because I check it twice a day and may have needed to add "PH up" once last week. The plants look "happy" with the acception of the coloring on the leaves. The new growth does not have this coloring (yellowing and brown spots on some). They have not drooped at all and one (Northern lights) has 2 dried up leaves that are cracking and falling apart, but new growth on this did not show signs and older leaves on the next node show beginning signs of coloring but plant does not droop and continues to grow. Any help on this issue would be of great help

txbudenthusiast Reviewed by txbudenthusiast on 09-20-2009. Yellow leaves/Brown Spots (Troubleshooting form included) Dear fellow enthusiasts, I am at a loss with this issue. I have tried to research this myself and can't come up with an answer. I could use some help from experienced enthusiasts. Not sure if I am overwatering or if its a ph issue or maybe even something else. From what I have read it seems that is possibly one of two but I don't know and don't know how to correct the problem. Equipment 1. Lights: 90 watt LED UFO light 2. Distance from tops: 12 inches 3. Reflector type: enclosed Rating: 5

[tinytoon]

how old are plants?
how much per gal of each nute?
pics if able?
I'm leaning towards you starving them but depends on age and how much you are giving them

[txbudenthusiast]

The were planted on 8/31.
According to the chart GH says 2.5 mil for Flora Fro, Flora Micro, and Flora bloom per 1 gallon of water.
1/2 teaspoon= 2.5 ml
I fill up my reservior with 3 1/2 gallons of distilled water and added the 2.5 ml and that was it. I did not want overdue it and cause nutrient lock or burn them. I was just trying to be cautious.

And, thanks for responding tiny toon. I appreciate any help you can give.

[txbudenthusiast]

Sorry if I did not clarify but I added the suggested amount 2.5 ml of all three per 1 gallon of water. It takes 3 1/2 gallons to fill up my reservior. I put in the suggested amount for only 1 gallon because I was affraid of adding too much and read overfertilizing is a common practice for novices.

[Felixthecat]

if u use distilled water i think u need cal-mag plus or sensi-cal veg from AN (theres also a sensi-cal bloom 4 bloom) the new cal-mag plus has trace minerals so thats really good and calcium,magnesium and iron supplement is what your missing in your distilled water

[txbudenthusiast]

Dear fellow enthusiasts,
I am at a loss with this issue. I have tried to research this myself and can't come up with an answer. I could use some help from experienced enthusiasts. Not sure if I am overwatering or if its a ph issue or maybe even something else. From what I have read it seems that is possibly one of two but I don't know and don't know how to correct the problem.


Equipment
1. Lights: 90 watt LED UFO light
2. Distance from tops: 12 inches
3. Reflector type: enclosed reflector material
4. Air Fans: Yes I use 2. One brings in fresh air. The other sucks out warm air
5. Yes I have an exhaust and a circulator fan
6. 90 watt LED UFO light 24/7 right now

Medium
7. Hydrotone (yes, I rinsed it before I used it)

Nutrients and water:
10. Source of Water: distilled water
11. Method of checking water ph: I use a test kit and test twice a day morning/night
12. Method of adjusting ph: PH up and PH down
13. Nutrients: I use GH Flora Micro, Flora Gro, Flow Bloom (I started very low and titrated up yesterday, but it is still under the recommended amount)
14. Amount of watering: I use a drip system and I had the watering on constantly up until yesterday and feel this could be my problem so I turned off watering since yesterday
15. Diamond Nector and Floracious Grow (just added yesterday for first time)
16. Ph levels stay relatively stable. I need to adjust once or twice mid week once the back up reservior is used.
17. ingoing ph and your run off: In going PH shows right aroudn 6 according to the color for the testing kit. Does Run off apply to hydro as well?
18: Foliar Feed: No I don't. Not sure what that is
19. Does your ec/ppm show a rise and fall when you do your daily PPM check? I don't check my PPM daily, but I checked yesterday and I remember it being at around 131 and now it reads 79 on the TDS meter. So I guess it does fluctuate

Your Grow Room:
19. Indoors or outdoor: Indoors
20. What is the size of closet, room or hut? 36'' tall x 31'' wide x 20'' deep
21. What are the temps and humidity levels while lights are on? current temp is 81.3 degrees and does not fluctuate much, does not get lower than 79 and never higher than 83 degrees. The current humidity is 43% RH
22. Have not seen signs of insects in the actual stealth box

Strain
23. What strains are you growing? Northern Lights and Pandoras Box
24. From Seeds or Clones? From seeds
25. Is it an autoflower strain? Not that I know of

This my first grow and I have read a few threads and seen the "Marijuana abuse" article. I am using a drip system that had a steady drop of about 2 drips every 5 seconds. I used this until yesterday evening because I thought overwatering could be my issue. The roots have now reached the reservior and have been doing so for about a week. I have flushed them twice since germination. Last Saturday I flushed them and ran plain distilled water until Sunday because I was switching nutes and did not want to cause a problem. I flushed them again yesterday because I changed the water and titrated up the nutes. This time I used GH's flora clean along with the distilled water while flushing and only flushed for 2 hrs like recommended on bottle. I did use less than the recommended dose as suggests for younger plants. I don't think my PH fluctuates all that much because I check it twice a day and may have needed to add "PH up" once last week. The plants look "happy" with the acception of the coloring on the leaves. The new growth does not have this coloring (yellowing and brown spots on some). They have not drooped at all and one (Northern lights) has 2 dried up leaves that are cracking and falling apart, but new growth on this did not show signs and older leaves on the next node show beginning signs of coloring but plant does not droop and continues to grow. Any help on this issue would be of great help

So you think it could be a nutrient issue and not a over watering, ph, or starving?

[martyrprojekt]

If you look at my grow log you will see the same issues.

You are lacking Cal-Mag. You need it plain and simple. You are also putting in to little nutrients. You should not ever need to use PH up ever, if the correct nutrient amounts have been added to your res with Cal-Mag. Especially if you are flushing this often. Even when you are flushing, you are not giving the plants the necessary nutrients of calcium and Magnesium and other essential minerals found in CAL-MAG plus.

Go to the hydro store sir...and cut the dead under leaves off...the ones being effected with brown spots will be fine once you start adding a cal-mag regiment. You will probably need to be adding 10ml per gallon.

Good luck!:jointsmile:

[txbudenthusiast]

Thanks for the info. So you should I flush before adding the Cal Mag plus once I get it? Should I wait until the next scheduled nute change or start ASAP?

[martyrprojekt]

Go get it asap...You flush with cal-mag also...You need to add it immediately. Do not wait. :jointsmile:

[tinytoon]

and get the nutes up to the 2.5 per gal not 2.5 for the whole res. Follow the bottle until you feel confident enough to start tweaking the mix yourself.