As soon as I saw 4 weeks in veg, and 1 gal pot, I recognized your issue. I’m on my second run of the same strain, and both times, once I reached a month in veg in 1 gallons, the plants started to undergo a full-spectrum of deficiencies. Taking a look at the root masses, I saw they were incredibly dense, and rootbound. It’s likely that roots are overtaking the medium in terms of volume, and therefore have much less of a buffer for the root zone. Try uppotting them into your final pot size, and give it a 4 days. You should see greener leaves, green new growth, and better overall health. Going from 1 to 7 gal pots instantly turned them around both times, and now my girls are very happy.
Photone app was Korona I think they changed name due to flu. Manganese (not magnesium) and Iron deficiencies look a bit like what you have. The “veins” will stay green and the leaf will yellow. Check out Cervantes deficiency chart print out and hang near grow. The 1 gallon pots will b an issue soon if not already. 3-5 gallon is better but I forgot I grow in coco but still think bigger would be better. Make sure u r adding some type of mycorrhiza to help break down nutes. Great white and recharge r my favorites . Photone app works great for veg keep between 200-400. If nothing works do a flush with ph’d water and make sure ALL the soil gets wet and test ph of run off. Good luck
I have a sick plant here :(, can’t seem to figure out a diagnosis on it. Here are the details:
temp 75-85 degrees, humidity 65%
week 4 of veg
Has been very happy up until a day or two ago
Feeding Athena pro recommended doses
Growing in coco perlite
Water once every two days
Looks like N deficiency to me, but I give her plenty of nitrogen
should I try a flush and then go back to regular watering? I literally cannot figure out what is wrong with her.