Need help with hydro issue - lots of details and pics

H

HD20038

Active Member
So I've asked this question on several forums but really havent got any good answers. Figured i'd try out rollitup again. I have tried to provide as much details as i can (i just copied and pasted a questionaire from another site) and i have also attached some pictures. Hope someone can help!

HYDROPONICS/Aero Ponics/Coco/Soiless/

How long has this problem been going on? about 2 weeks
Are you growing in a PVC grow tent? no, growing in a closet
What system are you running? Ebb and Flow
What STRAIN are you growing? Dutch Passion White Widow
What was the establishing technique? clones
What is the age of your plants? 6 weeks
How tall are the plants? about 9 inches
What PHASE are the plants in? vegatative
What substrate/medium are you using? Hydroton
What is the Water temperature? around 22 degerees celcius
What color are your roots? White? nice and white
What Nutrient's are you using? Fox Farms Hydroponic solution
How often are you feeding? flooding 4 times a day for 15 minutes
What is the TDS/EC? TDS is around 330 ppm
What is the pH of the "Tank"? between 5.5 and 5.8
Are you sure your calibration is correct on your equiptment? yes, calibrate often
How often do you clean your system: once a week
What size bulb are you using? 4 t5's
What is your RH Factor(Relative Humidity)? around 50%
What is your room temp? about 77 degrees F
What water are you using? RO
Have any pest chemicals been used? If so, What and When? no
Are plant's infected with pest's? no
 
H

HD20038

Active Member
HD20038 said:
So I've asked this question on several forums but really havent got any good answers. Figured i'd try out rollitup again. I have tried to provide as much details as i can (i just copied and pasted a questionaire from another site) and i have also attached some pictures. Hope someone can help!

HYDROPONICS/Aero Ponics/Coco/Soiless/

How long has this problem been going on? about 2 weeks
Are you growing in a PVC grow tent? no, growing in a closet
What system are you running? Ebb and Flow
What STRAIN are you growing? Dutch Passion White Widow
What was the establishing technique? clones
What is the age of your plants? 6 weeks
How tall are the plants? about 9 inches
What PHASE are the plants in? vegatative
What substrate/medium are you using? Hydroton
What is the Water temperature? around 22 degerees celcius
What color are your roots? White? nice and white
What Nutrient's are you using? Fox Farms Hydroponic solution
How often are you feeding? flooding 4 times a day for 15 minutes
What is the TDS/EC? TDS is around 330 ppm
What is the pH of the "Tank"? between 5.5 and 5.8
Are you sure your calibration is correct on your equiptment? yes, calibrate often
How often do you clean your system: once a week
What size bulb are you using? 4 t5's
What is your RH Factor(Relative Humidity)? around 50%
What is your room temp? about 77 degrees F
What water are you using? RO
Have any pest chemicals been used? If so, What and When? no
Are plant's infected with pest's? no
Click to expand...

of course my stoner ass forgot to attach the pictures. here they are....

whats going on with them? they started off great and then just started to crash
 
D

donpablo

Active Member
lookink at the bottom - lower leaves it really does look like a case of nute burnn the way the leaves are curling and turning brown. however going by the information you given and the ppm at 330. that would seem unlikely. i keep the ppm on my plants during veg at 650-700ppm aand i also use foxfarm nutes and soluables. the only other queston i can think of asking is how far away are your lights? i might even go as far as to limit your watering to 3x to give your roots as much oxygen as possible.
 
B

Bob Smith

Well-Known Member
You said that the TDS is 300 currently, but the new growth looks fine - what WAS the TDS when those leaves got roasted?
 
H

HD20038

Active Member
I swear, im telling you the TDS is reading right around 330 (and has always been at that). no bullshit, its something else other than nute burn...it has to be, i am barely adding anything and i am religious with checking my PH and PPM's. Im assuming its like a phospherous deficiency or something, but I keep getting answers that are all over the place. Some say they arent fed enough, some say that its nute burn. This is is why I need some HELP. No idea which way to go. I need some experienced grower advice! Please help me save my girls!
 
N

nods

Active Member
Give them a flush with ph 6.3 water then try
some canna rhizotonic I had something simalar
and was ph to low cause the ph pen shit itself
goodluck
 
420pharms

420pharms

Member
they look as though you have more than 1 issue what burnt them and malnutrition in genral im not using your nutes i have used botanicare and now use technaflora,300 ppm is lower than i run my clone tank, first nutes 500-700ppm for about 1 wk. or until i see noted growth 3 new nodes, then i will increase to 700-900 ppm when i flush i will use ph bufferd water only, i lower ph to 5.5 and flush till ph stops rising about an hr. if you get food into your girls ill bet they will recover quickly. im a noob w/o much exp. and i cant post pics with out getting help no matter how stoned i get
 
li0n

li0n

Well-Known Member
get a bottle of water and check the ppm on the label then measure it with your meter to test its accuracy
 
J

JohnQPub

Member
If you're six weeks into veg and are only at 330ppm you are probably deficient. Browning edges on older growth, curling upwards, looks like a MG def to me.

You said you were using RO water and I'm assuming you never reconstituted it with Cal/Mag. I'd try foliar feedings with an epsom salt solution or get some actual CalMag and see how they react.

An excerpt from the Marijuana Plant Abuse guide:


Magnesium is a component of the chlorophyll molecule and serves as a cofactor in most enzymes.

Magnesium (Mg) deficiency.

Magnesium deficiency will exhibit a yellowing (which may turn brown) and interveinal chlorosis beginning in the older leaves. The older leaves will be the first to develop interveinal chlorosis. Starting at leaf margin or tip and progressing inward between the veins. Notice how the veins remain somewhat green though as can be seen in figure 15.
Notice how in Figure 16 and 17 the leaves curl upwards like they're praying? They're praying for Mg! The tips may also twist.

This can be quickly resolved by watering with 1 tablespoon Epsom salts/gallon of water. Until you can correct nutrient lockout, try foliar feeding. That way the plants get all the nitrogen and Mg they need. The plants can be foliar feed at ½ teaspoon/quart of Epsom salts (first powdered and dissolved in some hot water). When mixing up soil, use 2 teaspoon dolomite lime per gallon of soil.

If the starting water is above 200 ppm, that is pretty hard water, that will lock out mg with all of the calcium in the water. Either add a 1/4 teaspoon per gallon of epsom salts or lime (both will effectively reduce the lockout or invest into a reverse osmosis water filter.

Mg can get locked-up by too much Ca, Cl or ammonium nitrogen. Don't overdo Mg or you'll lock up other nutrients.
Click to expand...
 
H

HD20038

Active Member
just wanted to say thanks for those that helped me out and give everyone a quick little update. For hose who said my girls were under fed, they were right on the money. Alot of people kept telling me it was nute burn, so I was keeping the ppm's low. I decided to go the other way and take the advice of those that were saying I wasnt feeding enough. Man, what a difference. My girls have completely turned around in the last few weeks. All the new growth looks spectacular....roots, stems, leaves.....totally looking sweet! So thanks to EVERYONE for their advice and replys!
 
dynamitejack

dynamitejack

Well-Known Member
HD20038 said:
just wanted to say thanks for those that helped me out and give everyone a quick little update. For hose who said my girls were under fed, they were right on the money. Alot of people kept telling me it was nute burn, so I was keeping the ppm's low. I decided to go the other way and take the advice of those that were saying I wasnt feeding enough. Man, what a difference. My girls have completely turned around in the last few weeks. All the new growth looks spectacular....roots, stems, leaves.....totally looking sweet! So thanks to EVERYONE for their advice and replys!
Click to expand...
I was just about to chime in and suggest they are being under fed, I just looked at my FF feed chart and the ppm should be some where around 1000+

Anyway, follow this schedule and you won't have any problems:
http://foxfarmfertilizer.com/hydrofeed.pdf

or shortened version
https://www.rollitup.org/newbie-central/87993-botanicare-dutch-master-fox-farm.html
 
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