Prevention is key. Once the colonies are formed they make a bio film that are resistant to chlorine and it needs to be raised to an amount that it toxic to plants to do the job according to https://manicbotanix.com/disinfection-in-hydroponics-root-disease-prevention/
I'm using an ORP sensor to monitor how much calcium hypoclorite should I add to the reservoir. Using tap water my ORP was 500 mV and dropped to 300 mV in just one day. I think it was the effect of the bubbles helping the chlorine evaporate. So I used calcium hypoclorite 65% 0.0133g/gal (150 ml...
The water level is below the netpot. The bubbles made by the airpump let the roots and the bottom of the cloning collar wet. The roots are in touch with the reservoir.
I germinated the seed in the cloning collar. No rockwool cube. No plugs. Nothing. It works. (Or dosent). I do not know if the plant problem is related to the lack of medium.
Thanks for all replies. I think I will lower the light, see how it goes. Change the water to tap ph'ed if no improvements. Maybe it's just better to start over.
4 week plant. Plant was becoming yellow on the 3rd week so I raised the ppm to 360 and the leaves tips burned, so I lowered to 320ppm. Using Reverse osmosis water with 1 ml/gallon Armor Si, 2ml/gal calmag, 1ml/gal micro 1ml/gal gro 1ml/gal bloom
Ph adjusted to 5.5 let it raise to 6.2 and lower...