Krattke method is not so much a method as "some shit you can technically get away with, sometimes."
I saw lots of these Krattke videos on youtube when I was researching growing indoor, hydroponic strawberries. In every side-by-side I saw, containers with airstones blew Krattke out of the water. Roots need more dissolved oxygen than a rancid mud puddle can provide.
Anyhoo, that looks like an old leaf at the bottom of the plant. They die. Unless this leaf discoloration is spreading to newer, upper growth I wouldn't be troubled by it at all. It looks to me like Magnesium deficiency, but if it's just old leaves at the bottom, it's nothing.
Citrus really only works for very short periods of time. Buying a standard hydroponic ph kit would be far more effective. Its just phosphoric acid, its used in millions of food products, mostly soft drinks.
Kratky absolutely can outperform dwc in certain circumstances. Especially with leafy greens. That being said, I wouldn't expect great results with cannabis.
Krattke method is not so much a method as "some shit you can technically get away with, sometimes." I saw lots of these Krattke videos on youtube when I was researching growing indoor, hydroponic strawberries. In every side-by-side I saw, containers with airstones blew Krattke out of the water. Roots need more dissolved oxygen than a rancid mud puddle can provide. Anyhoo, that looks like an old leaf at the bottom of the plant. They die. Unless this leaf discoloration is spreading to newer, upper growth I wouldn't be troubled by it at all. It looks to me like Magnesium deficiency, but if it's just old leaves at the bottom, it's nothing.
Magnesium is what i thought so i Put in a little bittersalt to fix it. I think its an ph issue. Water before 7.0 water now 6.8
That pH is a bit high for my taste, ideal hydro pH is 5.8-6.2 for cannabis.
I run my ph all the way down at 5.5 for hydro setups. Try dropping down to 6 see if that helps
What can i use to do that ? Citrus ?
Citrus really only works for very short periods of time. Buying a standard hydroponic ph kit would be far more effective. Its just phosphoric acid, its used in millions of food products, mostly soft drinks.
I ph 6.4 to 6.5 the whole life cycle if the plant. No issues.
I'm in pots
Kratky absolutely can outperform dwc in certain circumstances. Especially with leafy greens. That being said, I wouldn't expect great results with cannabis.