Damn. She is getting pretty damn light. One of my biggest gelato was doing that but went back to normal green and now is lightening up just a bit. Mine is caused by root aphids I'm guessing from what I saw today. The dying lower leaves looked the same as that picture you posted when you first noticed it. Yellowing veins with green in between eventually turning yellow as well. Kinda like mg def but reverse the colors. Did you disturb the topsoil any while mulching?
I have the same purple leaf petiole shit going on but also purple streaks on the stems. Root aphid infestation commonly manifest itself as magnesium deficiency. I foliar fed yesterday with 2 tbsp Epsom salt per gallon water. Usually 1 tbsp per gal will green them right up during magnesium deficiency. That didn't do shit yesterday but make them look sorta calcium deficient now too lol. This ain't my first rodeo with aphids either bro. In 2014 I had them in my light dep flowers. Killed my yield and plants were less frosty. But those were leaf eating aphids and I got rid of them by hitting all my full season vegging plants with Bayer Fruit, Citrus, & Vegetable. I never dealt with root aphids but I hit everything including my veggie/herb garden with that shit right now. Hopefully it works, and fast. I been pulling off dead/dying leaves like a mfer the past two days. Getting to the point where I'm scared I'm going to lose my 4 biggest ladies. Stick your finger in the root zone and disturb it a bit. If you have them you'll see them pop out the soil and dart across to another location and dive in. They're good at avoiding getting crushed too.The soil mix from pre planting is pretty loose when moist so I figured the mulching would keep it soft, just added a thin layer of perlite then mulched. This might be the Blue Gelato #41 or Strawberry Gum. After what you said about the aphids eating neem like cheerios, I'm starting to worry about those little shits. Here's a closer pic too. Also last 2 waterings had a good amount of mag.
I have the same purple leaf petiole shit going on but also purple streaks on the stems. Root aphid infestation commonly manifest itself as magnesium deficiency. I foliar fed yesterday with 2 tbsp Epsom salt per gallon water. Usually 1 tbsp per gal will green them right up during magnesium deficiency. That didn't do shit yesterday but make them look sorta calcium deficient now too lol. This ain't my first rodeo with aphids either bro. In 2014 I had them in my light dep flowers. Killed my yield and plants were less frosty. But those were leaf eating aphids and I got rid of them by hitting all my full season vegging plants with Bayer Fruit, Citrus, & Vegetable. I never dealt with root aphids but I hit everything including my veggie/herb garden with that shit right now. Hopefully it works, and fast. I been pulling off dead/dying leaves like a mfer the past two days. Getting to the point where I'm scared I'm going to lose my 4 biggest ladies. Stick your finger in the root zone and disturb it a bit. If you have them you'll see them pop out the soil and dart across to another location and dive in. They're good at avoiding getting crushed too.
It looks good to me,hit it with your flowering nutes and let it consume itself a bit as it finishes
lol4evahShe hasn't gotten any worse, lol if anything she's still stretching a few days into flower I think. Hopefully after my amazon delivery she bounces back to a dark green. I'm 6' 2" just stood in for a height reference cause I couldn't find may tape measure lol.