I have made a mess of this grow. It would be convenient to blame the light, but I own the failure. Not really sure how it all went south so badly but it did. This was my second attempt with this light and the first wasnít much better. In both cases the plants vegged and looked great under the light. But then about three to four weeks into flower obvious problems surfaced. If I didnít have another plant flowering along with these five, I would suspect the added dolomite possibly played a roll. I do not usually add it to my soil mix but after having grown C4DD and seeing how much additional calmag it ate, I thought it a good idea to add some upfront to my mix. I added a half cup which equates to about 1/2 Tbs per gallon. I also have another plant flowering that used left over soil from the C4DD run - no added dolomite yet the plant has reacted similarly. I checked pH of runoff a few times and it always ranged from 6.5 - 7.0. They received one feeding at half strength of Neptune's Harvest... other than that it's been just water with a few waterings with a boost of magnesium.
In many ways the damage looks like classic over fertilization and or light burn. But oddly even some of the most lower leaves appear this way while others next to them look fine. And one plant in particular, #4 (front left), was hit hardest.
I have clones of numbers 3, 4 & 5 outdoors and will share their progress. Cuts of #2 did not root so I will attempt to reveg her. Itís now day 43 - pics were taken at day 35. The third pic is of #3 and the fourth of #1. The last pic is of the only other plant being flowered with these, and the one that's in my usual soil mix. I am inclined to think this is related to environment rather than nutrition, but could surely be mistaken. Welcome and appreciate any input about what mightíve happened here.
Really sorry about this, VG.