DWC Plants seem to be becoming sick

[Blizzin]

Ok my plants seem to be beginning to drop and some kind of deficiency. Ok a couple questions if anyone would be so kindly to help. I have a couple dropping leaves toards the bottom of the plant anything I can do about that? Also As you can see in the pictures like 1 or 2 leaves out of all 5 plants have those yellowish orange spots which doesnt make sense why wouldnt other plants show signs?
My Setup Fluro 2 55w 6500k lumens
DWC 5 gallon reservor
fans ciculate
plenty of ventilation
temp stays around 78F and water is 68F pretty constant
I am useing General Hydroponics nutrients as stated on bottle for veg growth
Also I am foil spraying them about every 4 days with waterfarm
Also just began usuing Hygrozyme today see if it helps anything
Grow space is 31,5 x 31,5 x 63

Blizzin Reviewed by Blizzin on 10-26-2008. DWC Plants seem to be becoming sick Ok my plants seem to be beginning to drop and some kind of deficiency. Ok a couple questions if anyone would be so kindly to help. I have a couple dropping leaves toards the bottom of the plant anything I can do about that? Also As you can see in the pictures like 1 or 2 leaves out of all 5 plants have those yellowish orange spots which doesnt make sense why wouldnt other plants show signs? My Setup Fluro 2 55w 6500k lumens DWC 5 gallon reservor fans ciculate plenty of ventilation Rating: 5

[Blizzin]

Also forgot to add My ppm is around 1200 right after a new flush. Anyway here are pics.

Thanks For Help

26 days old on 24/0
http://i407.photobucket.com/albums/p.../IMAGE_022.jpg
http://i407.photobucket.com/albums/p.../IMAGE_023.jpg
http://i407.photobucket.com/albums/p.../IMAGE_024.jpg

[Duke420]

The spots could be a K (potassium) deficiency. Eventually the rest of them will show signs, like dark green leaves, then they lose luster, leaf margins turn yellow, progressing to rusty or brown spots then they die.

I would flush the system, use a mild solution (600)for a week and make sure you ph. :thumbsup:

[Blizzin]

The spots could be a K (potassium) deficiency. Eventually the rest of them will show signs, like dark green leaves, then they lose luster, leaf margins turn yellow, progressing to rusty or brown spots then they die.

I would flush the system, use a mild solution (600)for a week and make sure you ph. :thumbsup:

I am Phing like every 6 hours never leaves 5.8 to 6.0. Also about flushing it I just put a new batch in there last night after seeing the spots and droping think I should still cut back to about 600ppm? thanks for help

[Wobster]

I know nothing about hydro, ppm etc but the brown patches in that second pic look like nute burn to me. Could it be the waterfarm ur spraying on them...? Maybe half the concentration of it to see if that affects it. Then again, maybe wait for weedhound's suggestions. He's the hydro man.

[Weedhound]

Whenever you are in doubt about what is wrong I would immediately do three things.

1. Make sure your aeration is sufficient.
2. Make sure your ph meter is freshly calibrated
3. Drop your total ppms as overfert can present in some odd ways. Too much of one nute can actually lock out another.....although I''m not sure that's the problem here. The point from dropping the ppms is along the line of thinking the a deficiency will make your plant sicker.......but overnute can kill it off outright so always go with less in a situation you are unsure of.

That said..The yellow patches to me appear to be lightburn. What kind of light are you using and how far away is it? Can you get a pic of the entire plant, not just parts of it at a time? It would really help.

If you fill out Stinky's troubleshooting form it would be even easier (anda lot faster) to figure out your problem.

[Blizzin]

Whenever you are in doubt about what is wrong I would immediately do three things.

1. Make sure your aeration is sufficient.
2. Make sure your ph meter is freshly calibrated
3. Drop your total ppms as overfert can present in some odd ways. Too much of one nute can actually lock out another.....although I''m not sure that's the problem here. The point from dropping the ppms is along the line of thinking the a deficiency will make your plant sicker.......but overnute can kill it off outright so always go with less in a situation you are unsure of.

That said..The yellow patches to me appear to be lightburn. What kind of light are you using and how far away is it? Can you get a pic of the entire plant, not just parts of it at a time? It would really help.

If you fill out Stinky's troubleshooting form it would be even easier (anda lot faster) to figure out your problem.

First of Thanks for your time and help Weedhound and wobster.

Stinkys Form

indoor
hydroponic
Rockwool with those red pellets surrounding
DWC
PH is 5.8-6.0
Water source is store bought drinking water comes 6.0 ph
Age is about 25 days
ppm sits at about 1200 when fresh batch is put in weekley
Lighting is Fluro 2 55w 6700 lumens bulbs about 8 inches away
temp varys from 72 to 78F
water temp sits at 72 all time
humidity not sure but 70-80%
lighting is on 24/0
several fans for vent
I presoaked the medium in 6.0 ph water for 2 days beforehand

Also about the pic Weedhound will get best pics I can alls I got is a cell phone but see what I can do.

[Weedhound]

If you have a lot of plants together (this is the way it appears) the leaves will overlap and water can hide in certain spots......especially in higher humidity like yours.
Wobster mentioned splashing and I think its' along the same line so you have two votes for lightburn.

Without knowing what kind of nutes you use I would suggest two changes but I'm not sure either of these is YOUR issue.......at the moment. I would stop using botttled drinking water and go with either distilled or RO and CalMag or use the water from your tap unless its too hard. Bottled water carries its own issues.....including higher sodium content I believe among other issues.

Dropping the humidity in your room may also help.....70% is pretty up there (I like mine in the 30's) so that is something to think about for future........especially in flower where mold and fungus will throw a HUGE party on your plants with the higher humidity.

[Blizzin]

humm ok so ill raise my ligts a little.im using GH nuts. Also your right my plants are close together prolly a big factor, but in the end will it affect overall production by losing lower leaves like i am now? Also about the humidity its like 95 here everyday and humidity in the 90s so not sure it is even possible for me to do that without making an enclosed room? Once again weed thanks for your time.

[Weedhound]

Don't raise the lights......you're using flouros right? Just grab a good paper towel and go around pulling leaves apart and dabbing up the moisture. When you see two leaves overlap that is usually where water forms. If you raise your flouros too high they will become useless to you. I honestly believe your issue was water or nutes splashed onto the leaves and ANY light will burn wet leaves. Dry yours.

IF you are running straight DWC I'm not surprised that the lower leaves are dying off. As long as your new growth looks good and it's just the older LOWER stuff I personally consider that normal. If the drooping starts crawling up your plant and appearing in the newer, higher growth I would call it a different issue.

As for humidity.....all you can do is your best but if it remains high you may very likely encounter disease issues later. Consider a good fungicide like Serenade and follow the directions on the bottle EXACTLY......anything you can do to prevent your molds and funguses is good.

Your welcome. Hope that info helps.