Light when transplanting?

Only thing I'd worry about is how dry thay solo cups is, if you can dry it out quite good before transplant the entire thing should just slide out in one piece, if medium is moist whole thing will crumble, once root structure is gone it can take time for it to reestablish. Day or night won't matter. Good luck Hans solocup.

Transplant with the lights off? ROFL I don't know which is funnier, the question or the people actually telling you to do it lights out! Roots aren't photographic film; while they don't like light, short term exposure isn't gonna ruin them. Lol Find a trusted site with solid info, like growweedeasy.com All these internet "gurus" are gonna do is confuse you or give out bad info.

I wouldn't over think it too much. If you don't molest the rootball, it won't be stressed much. When done right you are merely gently placing it in a pot and gently covering it with more substrate. Really shouldn't cause and damage or shock to the plant if you stick to that. I water after a transplant, so i'd rather do it during the light hours. I don't want recently soaking wet pot "chilling like a villain" all night. I would take note of the plant and adjust your methods next time. This plant needs/needed more nitrogen at an earlier point. When those cotyledons start to pale, If that is soil, it did not come with much of a nutrient charge. Use more perlite or similar - vermiculite #3 is better because it adds some available Si. In a high water capacity substrate you want 50% of volume to be drainage amendment like perlite etc. In coco you only need 33% because it holds 2/3rds the water per volume. watering habits look off. That soil doesn't look wet and the plant is droopy. 1) always water entire pot. A little runoff ensures this is accomplished. In soilless you get 10% or more runoff. 2) wait for top layer to dry - again this depends on teh substrate itself. with a soil-like water capacity, you wait for top 1" to dry. in something like coco you wait for the top layer to change color and that's usually good enough. avoid wilt and you are fine. don't half ass it. don't have some pre-choosen volume of water you want to give. It takes as much as needed to accomplish the task and not an an fl oz less. you can learn this volume in hindsight if you are consistent with dryback before re-irrigating.

simple answer: Off

Hi, It is generally recommended to transplant photoperiod cannabis plants when the lights are off. Here's why: Reduced Stress: Transplanting can be stressful for plants. Doing it during the dark cycle minimizes stress as the plant is already less active during this period. Recovery Time: Plants typically recover better from transplanting when they have time to rest and adjust in the dark. Moisture: The soil in the new pot will be moist from watering, and the plant won't lose as much moisture through transpiration during the dark period. Good Luck buddy.

I always transplant during lights on period. It's definitely time to transplant. Should turn that plant right around. Careful with overwatering.