Leaves turning yellow- hydro fox farm

mastermeow

mastermeow

Member
Need help determining what the issue is.
I didn’t have an electric ph reader before. The ph is now 5.6
Before it ranged 6.0-6.5
I am using fox farm according to the feeding schduele.
I’m using led lights. Hydro clay medium.
2.75 gallons water
8.25 of big bloom tsp and grow big
Ph ~5.25
Fim 07.29

On 07.30 noticed leaves turning yellow and brown, became crisp and I cup them off.
Added 1 quart of water
Removed 2 quarts of water
Brought ph to 6.0

08/01
Ph 6.2-6.3

08/02
Ph 5.9

08/03
Ph 5.6
diluted ppm 20%
Brought water level to bottom of basket
 

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Cx2H

Cx2H

Well-Known Member
mastermeow said:
I found 1 before I clipped it. It is the best I have before clipping off the dead growth
Click to expand...
Hard to call it with that light on. Other's will not reply until you get good pix. Help us help you. :-)

What is everything you are feeding them? How often?
Topping up water ?
Room/water Temp's?
Ppms/EC?
Humidity?
Cal:Mg?
pH swinging?
Airstones in buckets controllable?
 
Last edited:
mastermeow

mastermeow

Member
Cx2H said:
Hard to call it with that light on. Other's will not reply until you get good pix. Help us help you. :-)

What is everything you are feeding them? How often? Once per week. Following fox farm hydro schduele. Big grow and tiger bloom

Topping up water ? Once a week
Room/water Temp's? ~72-75F
Ppms/EC? Ppm was 1200, lowered to 1100, then again lowered to 800 last night
Humidity?no meter
Cal:Mg? None
pH swinging? It keeps going back up, I add acid once a day it seems. I try to keep it around 5.6. Normally it’ll by 6 or so the next day
Airstones in buckets controllable? They are not. Just large air stones [/QUOTE
Click to expand...
 
Cx2H

Cx2H

Well-Known Member
Looking at the info you provided. 5.6 pH is low.
How do the roots look? Pearly white, brown tinted no smell, brown and mushy with odor?
Use tap water or RO water?
 
mastermeow

mastermeow

Member
Cx2H said:
Looking at the info you provided. 5.6 pH is low.
How do the roots look? Pearly white, brown tinted no smell, brown and mushy with odor?
Use tap water or RO water?
Click to expand...
Brown tented no smell. I figured it was nutrients staining. What would you recommend hydro ph to be?
 
Cx2H

Cx2H

Well-Known Member
Young plants should be around 500-700 ppm. You had a hot res at 1200, cause burns. Water level drops ppms go up alot. 1200=2.2ec on the 5 scale, big plant numbers. Try half doses.

pH should start around 5.8-6.2
Swinging can be from DO in water. Lots of bubbles pH goes up, less bubbles pH swings down. Swinging is ok if in range.

Ca:mg is almost a necessity.

They like 60ish% rH in veg if possible.
 
Cx2H

Cx2H

Well-Known Member
mastermeow said:
Brown tented no smell. I figured it was nutrients staining. What would you recommend hydro ph to be?
Click to expand...
If possible get some hydroguard and add it to the res at water change. Helps keeps roots happy and expanding.

I run 2.0-2.3ec in mid flower. 1000-1150ppm

I run hydro @ 6.2 and swing down by end of week. I'll adjust air flow for swing if going out of range.
 
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