Change what yime light comes on.

So lighy at moment comes on at 7am goes off at 7pm. Now its hot in uk. I want lighy coming at 7pm so its bit cooler when lights on. Being day 53 bloom. I was going to gove like 12-24 houra dark then aet timer to come on at 7pm

bah third reply, sorry... at 53 days, if it's close... any stress from extened light wouldn't have time to grow a nanner or pollen sac... but i'd still just be safe. make sure it has at least a minimal uninterrupted dark cyle each day to be safe.

10 hours is enough for many plants... 11hours is enough for vast majority... 12 hours of darkness is "safe" for all (if there's an exception it's some kind of lottery winner or like being struck by lightning)

This is all that matters. each 24 hours cycle it has at least a "12" hour dark period that is uninterrupted, that laste part is key. As long as you don't forego a long dark period, it will transition without issues. Either extend lights on 1 hour and with 1 less dark each day until you are at your new on/off times - OR - extend 1 dark cycle until the time you want the lights to come on in future. Technically you could also reduce light one hour and turn off one hour earlier, but this path reduces total amount of light given to the plant just as extending 1 dark cycle does. This is 1 less day out of 60, give or take. So, it is small potatoes and nothing to worry about, either way. imo, i'd do it fast and easy. especially if the temperatures have already risen. extend one dark cycle until your new cycle on time.

Photoperoids. They alredy in flower day 53

Que tipo de planta es? Porque cambies el temporizador no va a tener problemas la planta Pero NO te recomiendo que las dejes 24 horas en oscuridad. Si son fotoperiódicas, pueden pensar que viene el invierno y empezar la floracion. Si son autos, les dará igual Es como si hay un día muy nublado (sin sol). La planta lo tolera sin problemas Eso sí, hazlo solo una vez para no estresarla haciendolo más veces, así que antes de cambiar, ten claro que horario vas a dejar en adelante Suerte!