Irregular light schedule.

I’d stay at 18 going to 24 for a boost for a few days isn’t likely to help as much as it could hurt or even set them back having to adjust, If anything turn your light power up a bit or lower the height a bit for more intensity while on 18h 👍 happy growin

You take chances with plants herming Switching light schedules or intensity of light can cause plants to do weird things.

Firstly, your plants require a night cycle. Folks every now and then claim that 24 hour cycles are a thing but in reality the plant is stressed to the extreme. I myself have done 24 hour light cycles (not intentionally). Other than requiring a night cycle, the plant also has a rhythm. For example, you can have a set cycle then change the light schedule and still measure nutrient transport analogous to the night-time happening during what WAS the night time. AKA, yes swapping around will harm your plant. How much harm is the question.. Past that, there is no optimal day versus night time (evidenced by the plethora of longitudes and latitudes which the plant is native to). This is plant speciifc, phenotype speciifc, and can completely be changed based on DLI target.

Hi ich würde das so nicht machen. Du kannst dir eine App runterladen die "Photone" heißt und somit deine DLI berechnen und dann deine Lampe auf die ideale Höhe/Stärke einstellen. Ich benutze dann einen licht Zyklus von 20/4 bis sie sind die Blüte gehen. Dann senken ich die Stunden auf 18/6 bis am Ende. Ich denke sie brauchen auch eine phase Dunkelheit damit sie sich erholen können. Und das hin und her Wechseln wird sie wahrscheinlich nur stressen. Und lichtstress ist auch nicht gut, die sie eventuell anfangen zu zwiedern. Also männliche Blumen zu entwickeln oder andere Stress bedingte Krankheiten oder Effekte. Viel erfolg

Hi bud. This is a great question as many people often ponder this! But no, extra light will not do anything for your plant, if the daily light intake is already achieved. Same as with nutrients, the plant can only process so much. Hence more is not better. Hope this helps, even just a little.

If is auto you can give 24h light. It will finish faster than 18h. Good luck

Won't do the things your thinking of. Like numbers stated what do you think it will do, and why? DLI is a great tool. I aim for aorund 35-37 DLI in my tent and with that I know they are getting their fill and won't need any more or a "boost" You can calculate your ballpark DLI using PPFD maps from your lights manufacture. Its stupid simple. gets weird when you using LUX or another readout vs PPFD https://www.waveformlighting.com/horticulture/daily-light-integral-dli-calculator Hang height has a role to play in this so try and keep em around the advertised height in the maps. if not Closer is stronger DLI and further is weaker DLI. My lights are overkill and I need a 30" hanghieght to hit my 37DLI on 16/8 and 11/13, I don't use traditional 18/6 or 12/12 cuz of how strong they are. Its a bit annoying but still works.

The real question is what benefit do you think this provides? if you already provide 'max' dli relative to your environment, then this won't do anything useful. If it does help, it just means you need a stronger light that can properly provide light over a period of time that allows a sufficient dark cycle.