Someone please help..

Hello, i am having a BIG problem with my plants.

I have been having trouble with my plants 'mayple leaf'.

These are the symtoms.

Flowering plants (3.5 weeks into flower):

* leaves appear dry with big ridges between veins.
* leaves curled downwards
* when leaf is help up against the light it has light patches of green
* stems are green and not brittle
* not many pistil's
* stunted growth

I use ghe nutrients at a rate of 1ml/l grow, 1 micro and 0.5 bloom for the first three weeks of growing plus the first week of florwing. I also use mineral magic and some hydrogen peroxide. At the second week of flowring i change the nutrients to 0.5ml/l grow, 1ml micro and 1.2 ml/l bloom.

As ive been seeing the plants getting worst for the last 5 days ive been running a quarter strengh nutrient solution without the mineral magic or peroxide and yesterday i addded some hesi pk and some enzymes to that solution. The temp is ok and the humidity is around the 60% the plants have thick while roots.

mother plants :
* leaves appear dry with big ridges between veins.
* leaves curled downwards
* stunted growth
* purple brittle stems

The mayple leaf mothers run out of a tank that also supplies to other strains of mothers that are doing well. i have been running ghe nutrients at a rate of 1mlflowering/l grow 0.7 micro and 0.6 bloom plus the mineral magic and some ocasional peroxide. I have now changed for the past 5 days to a quarter strangh nutrient solution and yesterday i added hesi pk and enzymes. Both systems are flood and drain.

Could someone please tell me whats wrong with my plants and how to fix them please, and why it is only happening to this strain. The pictures taken were of the worst affected plants. Is it worth keeping the flowering crop or am i just wasting time. What could i do to solve the problem. What could i do for this not to happen again.
Please help!!!!
thanks

...ghe? ...is this General Hydroponics Floramicro,grow,bloom?
...what is your pH like?
...ec/tds/ppm?
...what kind of light are they under?
...do you have good air circulation/exchange?

trichlone fiend said:

...ghe? ...is this General Hydroponics Floramicro,grow,bloom?
...what is your pH like?
...ec/tds/ppm?
...what kind of light are they under?
...do you have good air circulation/exchange?

Click to expand...

I always keep my ph from 5.5 to 6.2 usually try to keep it around 5.8.

My ec is never higer than 1.4 usally around the 1.2 mark.

Some are under 600hps and some are under two 100w leds, both have the same problems.

Ghe is general hydroponics which does consist of flora, mirco, bloom.

And i do have good circulation and exchange, temperatres are also fine and humidity is slightly high at 60% but that wouldnt cause what i have.

The weird thing is that it only affects this strain of plant because i have others running on the same water and they are fine.

I know its some kind of nutrient deficency / toxic buildup but i want to know what exactly is defecient and why has it happened, for it not to happen again.

Also the pics posted are of the worst affected plant.

Thanks for the help

I'm growing with GH also, ebb and flow....I'm using the Lucas Formula, and haven't one single problem thus far. I've been growing for years in soil, and I personally have never had your problem here....hopefully someone else can help ya out though.

...if your interested in the Lucas Formula (many, many people suggested it to me when I was considering converting my garden to hydro) here's a copy and paste....it's very, very easy...I don't change my res until harvest (only topping off every couple days)...works great.

General Hydroponics Flora Series Feeding Strategy - Lucas Formula

G-M-B (Grow-Micro-Bloom)
0-5-10 - For Vegetative cycle (18/6)
0-8-16 - For Flowering cycle (12/12)

The numbers above indicate the number of milliliters (ml) of Flora Grow, Micro or Bloom formulas that I use in one gallon (US Liquid) of nutrients.

You will notice I dont use any of the Flora “Grow” formula, do not need to, the Flora "Micro" provides plenty of Nitrogen.

There are two ways to work with this formula:

1. Top off the reservoir daily using a pH corrected water solution as required to maintain full reservoir level. After adding back an amount of water equal to the amount of your reservoir capacity you should change the reservoir and put in fresh solution.

2. Top off the reservoir daily using a pH corrected 100% strength nutrient solution as required to maintain full reservoir level. Continue to use this nutrient solution without dumping the tank unless the PPM rises above acceptable levels.

Between vegetative and flowering cycles you should dump your nutrients, then flush (possibly with Clearex) to remove salt buildups, then change to the other feeding program. Always shake your GH nutrient bottles before using them!

For young plants, just transplanted into the hydro setup, give them 50% strength nutrient mix to prevent overfeeding them while their young. Gradually bring up the mix to full strength as they grow over the next few weeks or so.

The lucas formula is normally intended for use with RO or near 0 PPM water.

NOTE: The Lucas formula eliminates the need for Epsom salts to correct (Magnesium) Mg deficiencies in most normal feeding programs recommended by manufacturers. Cannabis needs a lot of Magnesium to thrive.

The Flora Micro is providing the Nitrogen and the Magnesium in the proper balance, thus there is no need for the Grow formula and little or no room under the maximum acceptable ppm limit of 1600 @ 0.7 conversion.

Calculated EC/TDS levels:

EC microsiemen:
0-4-8: 946 µS
0-5-10: 1184 µS
0-8-16: 1894 µS

TDS @ 0.5 conversion:
0-4-8 = 473 ppm
0-5-10 = 592 ppm
0-8-16 = 947 ppm

TDS @ 0.7 conversion:
0-4-8 = 663 ppm
0-5-10 = 829 ppm
0-8-16 = 1326 ppm

Addback Calculator - (For Advanced Users)

Say you were running the 0-8-16 formula, at 0.7 conversion with a 22 gallon res. When you first fill it up, your ppm will be around 1330.

Now you have been growing for a week, and some of the water has been taken up by the plants, some has evaporated, and now your res is at 947 ppm. You need to get your ppm from 947 to 1330. Here is the equation:

((target - current) / target) * 8 ml per gallon * res gallons = Flora Micro (ml) double this figure to get Flora Bloom (ml)

Example:

((1330 - 947) / 1330) * 8 * 22
(383 / 1330) * 8 * 22
0.3 * 8 * 22 = 53 ml Flora Micro

53 ml Flora Micro, double that and you get 106 ml Flora Bloom. So 53 ml Flora Micro and 106 ml Flora Bloom to add back to your 22 gallon res to get you from 947 to 1330.

Using Hard Water GH Micro

I had been experimenting with using the Hard water Micro as a substitute for the normal Flora Micro, this to account for my hard 350 PPM water and the lack of a large enough RO filter at the time. It has worked well for me. I just kept my reservoir below 1150 PPM @ .5 conversion and its all good.

One tip - do not pH down this stuff, the hard water micro will drop pH gradually over the next 24 hours, for example I mix up a batch, it is at like 6.2, the next day, its at 5.6-5.8 after running in the system for a while. If I pH downed that to 5.7 before putting it in the system, it ended up as low as 4.8-5.2 by the next day.

My conclusion, the hard water micro was buffering the alkaline crud in my water, it just doesnot do it ASAP fast like the phosphoric acid.

holy cow and i thought my girl was messed up... that plant look's in bad shap feel bad for you bro..

Thanks for the help and all but this still doesnt solve my problem. I want to know what is wrong with them not what other nutrients i can use lol its abit to late for that now

When in doubt flush it out........ Looks like a buildup of nutrient salts to me. is that "the claw" i see?