Leaf Tip Burn

[durb1313]

So Here we go again. This seems to happen every time in my bloom cycle. The tips on the leaves start to burn and it gets progressively worse. I am worried that I have too much lime in my water and it is gradually raising the ph. I filled out the trouble shooting form below and also included some pics and the water report info from my municipal company. I did just deal with thrip, but it is now under controll with neem oil and nematodes. Any advice other that buying an R/O filter(that I can not afford right now) would be great.
Please help..thanks

- Indoor
- soilless in 5 gallon pots
- Roots Organic formula 707
- I have added nutrients and nematodes to the soil.
SCLR-Soil or slab runoff pH - Not sure and I want to get some advice before I water again to find out

Water Source.. Municipal water 2008 water report is below.
Total Dissolved Solids 150 â?? 230 ppm
Sulfate 47 ppm
pH 7.8 â?? 8.3
Conductivity 264- 394 µmhos/cm
Alkalinity (as CaCO3) 47 â?? 64 ppm
Total Hardness (as CaCO3) 100 ppm = approximately 6 grains per gallon
Sodium 16 â?? 31 ppm
Ammonia 0.04 â?? 0.46 ppm
Chloride 22 â?? 45 ppm

E-Source water pH - 8+
E-Age of plant - cloned Jan 13 2009
E-Type of fertilizer - Humbolt Nutrients Organic, Grow 3-1-3, Bloom 0-10-0, and Duece Duece 0-0-22
E-Rate of application (if hydro, this is your PPM number, preferably after each component is added) -
5 gallon bucket:
Grow- 31ml - 683 ppm
Bloom- 31ml - 860 ppm
Duece Duece - 6ml - 1072ppm ph 6.8
ph adjusted to 5.8
Just tested the soil and it registered 7-7.5 I used on of the testers that comes with the color coded capsules..not sure how accurate this is.

E-Lighting source and distance from plant - 1000w HPS 24" from plants on a light rail
E-Air temperature (both day and night if you are running a dark period) 65 night 75 day
E-Air % Relative humidity - 45%
E-Lighting schedule 12/12
E-Type of ventilation your room has - 4" 170 cfm intake 30 min on 15 off (it get a little cold on all the time)...6" 600 cfm out always on through 3' coco filter

Thanks for your help and let me know if you need ay more info.
Durb

durb1313 Reviewed by durb1313 on 03-12-2009. Leaf Tip Burn So Here we go again. This seems to happen every time in my bloom cycle. The tips on the leaves start to burn and it gets progressively worse. I am worried that I have too much lime in my water and it is gradually raising the ph. I filled out the trouble shooting form below and also included some pics and the water report info from my municipal company. I did just deal with thrip, but it is now under controll with neem oil and nematodes. Any advice other that buying an R/O filter(that I can Rating: 5

[Weedhound]

Your social security number and bank account # would be great!! What exactly is the ph runoff. I would not adjust soil nutes to the fives.....no less thsat 6.3 actually going in. Both the solution you water with AND your ph runoff should be between 6.2-6.8.

edit: you already told me runoff....7-7.5. This is too high. You need to either flush to restore proper soil ph or transplant CAREFULLY to fresh soil that should already be buffered to the correct ph.

When you say gets worse, how much worse? Does it affect the bud leaves?

[Weedhound]

http://boards.cannabis.com/plant-pro...hy-how-do.html

good luck.

[Divestoned]

Yep you need too flush your soil with PH balanced water at 6.8. then make sure the feed water is at 6.8 when you feed.
The leave's are actually saying you are over-fert. dont run your PPM over 14-1600.Often in soil you can get away with much less nute's,do to the nute's in the soil.

Dive:stoned:

[dejayou30]

I grow in hydro not soil but I know that your pH is too high at 7.8-8.3. That is probably the issue

[durb1313]

Hey you said the more info the better the answers, so I figured put everything in there and see what happens. :thumbsup: Thanks for the advice on the ph and flushing for nutes....as you can tell I am trying monitor everything like I did with hydro, but I switched to soiless a while back and have not dialed it in yet. I am so glad I found this site.:jointsmile:

I just flushed the two biggest ones, and got some interesting results.
- The water I used to flush was ph 6.6 and ppm 193
- the water that came out was ph 6.3 and ppm 1052
So from what I have gathered my soilless medium is ~6.1 (too low) and I have way too many nutes in the soil, so I am running a few gallons of 6.6 water with no nutes through each one right now.

Anyone know what an ideal runoff ppm is for a soilless mix?

Tanks,
Durb

[VampireHigh]

Ph balanced water pot flush will cleanse your soil. Tips of your plant indicate over ferilization. Possibly reflush and add a few whole mushrroms to the soil... Remember to dice them. I use them all the time to help balance my ph and stablilize my soil.:jointsmile: