Is this normal new rapid growth or did I mess up and over water

Growing at 24/0 is not ideal for plants, despite what the autoflower crowd advocate. Cannabis plants NEED a rest period every day for a correctly functioning metabolism There are certain metabolic processes that only occur during the dark period. Without a dark period, these processes can not occur, leading to plants with messed up metabolisms. A plant with a messed up metabolism will never be as healthy as it can be. 18/6 is the healthiest choice. I am sure there are many who will say "but I have grown for ages at 24/0 and my plants are killer"........ but could their plants be even better with a correctly functioning metabolism?

Looking good keep doing what your doing

Overwatering is kind of a boogeyman... it's hard to do unless engating in poor watering habits. 1) fully saturate (if soiless, also get 10% runoff. 2) wait for appropriate dryback and repeat. That second part is what people most often fuck up. But people are also irrationally afraid to fully saturate a pot, which is the proper way to water. Make sure it drinks down enough water between irrigations. Deoth of dryness and weight loss relative to a saturated pot are the 2 best ways to determine the need to water. some media hold less water per volume than others. So a 'heavy' soil you may want to wait for 1" deep to dry but in something like coco that holds a lot less water, you trigger an irrigation sooner relative to depth of dryness. Usually when the surface begins to change color it's safely ready. So, there's a bit of range of dryness that will not lead to problems. Those curling leaves are a bit worrisom... as with any chlorosis on new growth... if it corrects itself quickly, it's less of a concern. pH swings can contort new growth, so can some trace element issues, which would be rare, but could be locked out by pH. not enough info to diagnose with confidence - you can reference any leaf chart to see the same. Check pH and adjust watering habits if they deviate from the above. Ensure climate is kosher (high vpd?).