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OnlineKaptKid
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Plants Need Help, 1st Time Hydro
    #550561 - 04/25/11 10:27 PM (5 years, 7 months ago)

Hydro Growers:
1. Are you growing from seed or clones?clones
2. How old are your plants?6weeks
3. How tall are your plants?12 inches
4. What type of hydro system are you using?flood and drain
5. What brand/type of nutrients are you using?Fox Farm
6. What is the Ph of your nutrient solution?6
7. What is the PPM/EC of your tap water?.8 EC
8. What is the PPM/EC of your nutrient solution?1.7, was 1.9
9. What is the temperature of your nutrient solution?80 to 82f
10. Does your PPM/EC show a rise or fall when you do your daily PPM check?Rise
11. Does your pH show a rise or fall when you do your daily check? fail
12. Do you foliar feed or spray your plants with anything?no
13. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights")432 watts T5HO
14. How close are your lights to the plants?3 to 4 inches
15. What size is your grow space in square feet?4sq ft(2 x 2)
16. What is the temperature and humidity in your grow space? 85f, 65rh
17. Have you noticed any insect activity in your grow space?no
18. How much experience do you have growing? 1st Time Hydro, 3 soil grows, not much

2 weeks in cloning stage
4 weeks in feeding schedule
Life was great, even got good at EC and pH readings.
Week 5 and the plants are not Happy.
The rust spot, leaves turn down on tip and leaves inside the jungle are yellowing and dying.
 







This little thing look so good a few days ago.



Don't know why but I feel like I'm burning the plants with  nutes?


Should I flush the system now? Its only 8 gals.


Week 5 change up the nutes.

Thank for the Help.


--------------------
Child of the 60's, Tripping ever sence.


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Invisiblec99hunter
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Re: Plants Need Help, 1st Time Hydro [Re: KaptKid]
    #550583 - 04/25/11 11:48 PM (5 years, 7 months ago)

So its week 5 and you've never changed the nutes yet? Your last few comments confused me :confused: I would change out the nutes and give them a good flush with distilled water for a few days and clean that res out. Also would try and get the res temp down to the low 70s if at all possible.


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OnlineKaptKid
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Re: Plants Need Help, 1st Time Hydro [Re: c99hunter]
    #550588 - 04/26/11 12:01 AM (5 years, 7 months ago)

The flush comes at the end of week 6. I have done res changes(2).

I'm following the FF hydro feeding schedule.


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Invisiblec99hunter
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Re: Plants Need Help, 1st Time Hydro [Re: KaptKid]
    #550664 - 04/26/11 12:02 PM (5 years, 7 months ago)

Quote:

KaptKid said:
The flush comes at the end of week 6. I have done res changes(2).

I'm following the FF hydro feeding schedule.





I would flush them for a couple days and get the res temp down. Im not talking about flushing for the harvest, Im talking about flushing to clean up any toxic salt build up that could be occurring. Is that a megagarden?


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OnlineKaptKid
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Re: Plants Need Help, 1st Time Hydro [Re: c99hunter]
    #550672 - 04/26/11 01:07 PM (5 years, 7 months ago)

Yes it is.


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Invisiblec99hunter
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Re: Plants Need Help, 1st Time Hydro [Re: KaptKid]
    #550683 - 04/26/11 02:21 PM (5 years, 7 months ago)

Have you taken the top tray off when changing the nutes or do you just pump them out? When I used a megagarden I would change out my nutes every 2 or 3 weeks and I never once had a problem.

But I did notice that the nutes would collect and fall to the bottom a lot and just stay there because there's not really too much water movement with that setup.

In the big picture everything looks ok to me. The yellowing could be from not getting enough light because of all the foliage or could be a nute problem, My guess would be potassium or magnesium.


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OnlineKaptKid
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Re: Plants Need Help, 1st Time Hydro [Re: c99hunter]
    #550734 - 04/26/11 06:05 PM (5 years, 7 months ago)

It could be a light problem. Maybe just started at time of nute change.
I think nutes because of the little plant.
A lot of plant growth there and the leaves going are deep in the grow.
The leaves go over  night.


Today starts a new week so I'll drain and flush with clean water.

Edit: This would be a good place to play around with the light meter.


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Edited by KaptKid (04/26/11 06:08 PM)


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Invisiblecoda

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Re: Plants Need Help, 1st Time Hydro [Re: KaptKid]
    #550813 - 04/26/11 07:35 PM (5 years, 7 months ago)

A rise in the PPM/EC of your solution on Res check means your plants are consuming more water than food.

Pic 1 to me looks like nute burn
Pic 2-3 to me looks like the beginnings of N toxicity
Last pic waaaay too much food is my guess.

Overall your grow looks very healthy!  I think a solid flush and then maybe a lowered EC/PPM of your nutrient solution should straighten you right out.  You might want to consider backing off of the N for a little bit too, the clawing of the leaf tips is a good indication they're getting too much N.


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OnlineKaptKid
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Re: Plants Need Help, 1st Time Hydro [Re: coda]
    #552362 - 05/01/11 06:05 PM (5 years, 7 months ago)

After flushing backed EC down to 1.4 to 1.5.
FF called for it to at 1.7 to 1.9.

Have lost the clawing effect.

So far the pH has been holding around 6.

Will flush again at next nute change.


EDIT: Thanks All


--------------------
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Edited by KaptKid (05/01/11 06:06 PM)


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Invisiblec99hunter
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Re: Plants Need Help, 1st Time Hydro [Re: KaptKid]
    #552377 - 05/01/11 06:45 PM (5 years, 7 months ago)

Thanks for letting us know how they did! :up: Glad to hear they're getting better! :laugh:


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Invisiblecoda

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Re: Plants Need Help, 1st Time Hydro [Re: c99hunter]
    #556152 - 05/16/11 06:46 PM (5 years, 6 months ago)

Quote:

After flushing backed EC down to 1.4 to 1.5.
FF called for it to at 1.7 to 1.9




Even though this is a 2 week old post, I just wanted to point out that nutrient companies are in the business of selling you nutrients.  Knowing that their recommended "feeding schedules" are almost always on the heavy side (Following AN's schedule to the T produces a nutrient solution of 2000+ PPM for me which is just insta death for plants) since you use more of the product that way.  It's good to use it as a baseline, but it's best to consistently test the strength of your nutrient solution.  There are too many variables involved to just accept what you read on the bottle and go.

I've been feeding my plants at around 700-800 ppm for the past few grows and have been loving it.  I use less nutes and deal more with underfeeding problems than nute burn.  less can be more in a lot of situations and the easiest problem in the world to fix is a starving plant that just needs more food.


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