I need a lil advice please

[spoon2610]

Here the problem the leaves are burning! My plants are 2 feet tall, my light is 3 feet above that, my light is 600w at 75%. I have a humudifier, heater and a fan in my tent. My set up is a 4x4 ebb and flow sys. Nute's runnig at 6.0 to 6.5 ph and around 980 to 990 ppm. 25gal res. i followed the instruction on the label of the nutrients. It still in the veggin stage and it about 7wks old. I dont know why there burning.............HELP!!!

Oh its the Sour Grape strain

[tinytoon]

The last pic almost looks like leaf is dieing do to shade but the other ones......
How close is fan to the plants with damaged leaves??
How close is heater to plants with damaged leaves??
Both of witch can cause that burning look to leaves. Doesn't really look like nute or light burn.

[spoon2610]

@ Tinytoon
The humidifier is underneath in front of the fan which is blowing on the plants and the heater is about 4 1/2 feet away from the plants. Tha heater is facing the plants also.

[tikiroom]

Nute's runnig at 6.0 to 6.5 ph and around 980 to 990 ppm.

Could be a ph problem. For hydro the ph should be between 5.5 to 6.0.
Try lowering the ph and see what happens.

[Lynhal]

I agree with TR you should lower the PH and see if things improve. ;)

I saw this ph table picture in one of the threads GTD (ty GTD!) was answering and borrowed it from there because I thought it could help you.

[avon211]

I third that !! ph is too high 6.5 is marginally bad. 5.8 is optimal though a little sway either way is fine meaning 5.6 or 6.2. Do have fresh coming into the tent? a dose of fresh air every 1/2 hour or so is good.

[spoon2610]

Oh man my ph is way to high. Okay im gona lower my Ph and see what happens.
Thanks for the help!!!!

[spoon2610]

It gets fresh air because my tent is in the garage and i leave the sides of the tent open when my lights are on.

[tinytoon]

For vegging PH should be lower, 5.8 being optimal (good job Avon:thumbsup:) but anywhere between 5.5 and 6.0. In flowering you should let your Start higher like 6.2 but not over 6.5. The reasoning behind this is if your system is dialed in correctly when vegging with healthy plants your PH is going to drift up. When flowering your PH will drift down. By starting your PH in the correct area you will prevent stressing the plants by shocking them with sudden PH changes. For instance, You fill your rez with fresh water, nutes and whatever else your throwing in. PH is right where you want it at 5.8. You go to bed and get up late in the morning and dont have time to check plants but wtf they be alright :thumbsup:. You go to work and when you return at the end of your day the first thing you want to do is visit the ladies, why not thats what I do :D. You trip over the dog, kiss the cat and kick the wife to make it to the grow room to find ot ....... SHIT my PH is 6.1!!!!!!! You grab your PH down, liquid or powder no matter, or whatever organic you use and dose it till your PH reads 5.7!! Good job right down where your suppose to be but what did that .4 do to the plants. Everyone and their brother preaches DO NOT STRESS YOUR PLANTS!!! If a tiny bit of light makes it through a zipper your plants can hermie while flowering but what is that light in fact but stress in a round about way.

:angry3: Ok I'm done preaching. I stand behind what I wrote. I vote against PH. If you are in a climate where you are using a heater you need to face it away from the plants. Heat the room not the plants. Also the fan being to close at to high of a speed can effect the way a plant looks.
Cannabis Plant and Pest Problem Solver - Pictorial - 420 Magazine (http://www.420magazine.com/forums/problems-pests-disease-control/81275-cannabis-plant-pest-problem-solver-pictorial.html) That is from a different site but is the best pictorial problem solver that I have found so far.

[spoon2610]

Thanks tinytoon

[LOC NAR on probation]

Get rid of the humidifier. You need a de-humidifier.

Whats happenning is the humidifier is brining the moister in the air to an all time high. I would hate to see how high. With that and plants transpiring I bet the water drips down the outer walls of the room.

With that being said guees what ? moister is collecting on the leafs. The plants can not transpire enough to dry out and when the lights come on Guess what again ? Even though you can not see it well your leaves are covered in moister when the light come on and that is the burn on the leaves. The light doesn't even have to be right on they when they first heat up under the light. Just the heat will cook them.

Please lose the humidifier !!!!!!!!!!!!!!!!!!!!!!!!!!!

[spoon2610]

Get rid of the humidifier. You need a de-humidifier
Please lose the humidifier !!!!!!!!!!!!!!!!!!!!!!!!!!!


Humudifier is outta there now.
Thanks Locnar

[avon211]

thanks Tiny , Yea I am learning and helping when I can. Which isn't too dam often. Keep your tent zippers closed you do not want unwanted light . I hooked up a squirrel fan I time it on for a one minute and off for 15 minutes on. At the same time I am venting out of my tent the same amount with another squirrel fan this one has the filter to keep those wonderful odors from going out of the tent or room.