Both plant have the same time,one of them is growi...

Hello @Asvpxpridy ! You need to lower you PH . The PH needs to be around 5.5 at this stage. Also when using synthetic fertilizers ( especially at hydro ) you need to check the EC of the nutrients solution. Your EC at this stage needs to be at 0.8 ms/cm. Correct those to things and you will see huge difference. Happy growing ! 👊

Hi @Asvpxpridy! I see 2 mistakes here, first your pH is almost neutral whereas it needs to be slightly acidic (between 5.3~5.8). Secondly you're giving too much nutrients to this young autoflowering baby. I guess you're following the manufacturer's schedule but you should start with 1/4 of what they recommend since you're growing ruderalis-related plants. Do you check your EC/ppm? I highly recommend to get an EC-meter for hydroponic setups. Hope this will help, keep us up-to-date and happy growing 👊

Hi i just will do an addition to the answer to make you understand the PH- Range...https://www.growweedeasy.com/ph/#hydroponic-soilless-pH... i think pictures say more than thousand words.. the range is needed that the plant can soak the Nutrients , In hydo its better to let lthe range between5.5to 6.5 and not to adjust on one point. If you let the range " FLOW" the plant gets all the nutes that she needs. Hope i could help you .. greetings

hey man you want your PH to be similar to the PH of rain water which is 5.4 , PH fluctuations can also confuse your plant that s why it looks like nute burn but actually what happened was a slight lock out. Don't worry though you caught the issue early enough and you can expect a great flowering period once you dial that in. Have a good one !