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Grow and bloom lights together in growbox at the same time?

Voyteq
Voyteqstarted grow question 4 years ago
Can I use both grow and bloom lights together for all the timeor should I switch them? I have: TLED 42W UE L95cm GROWING and TLED 42W UE L95cm BLOOMING. If yes I would have 84W in total for 0,6m2 growbox. Are there any side effects of using ie bloom light for grow time? Thanks! 🙏
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Week 2
Setup. Lighting
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GanjaTorturer
GanjaTortureranswered grow question 4 years ago
You can use both. Plants do 2 kinds of synthesizing of light into energy. Photosynthesis A and B. Blue and red light are needed for these to happen. You may consider your bloom light as giving the early morning and late evening light during whole veg. And veg lights are giving your plants midday sun whole bloom phase.
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NobodysBuds
NobodysBudsanswered grow question 4 years ago
use the DLI chart i have in my profile comments and figure out if it is too much... the plant will also fall over at that stage if "too much". but, you might be able to run for 16 hours and reach a 'max' DLI for your context and save some money while providing the different spectrums of light and the benefits that brings. if you have umol/s spec, it's easy. add up total umol/s from both lights, divide by sq ft. multiply that by 10.7639 and that is your PPFD value. Use that value in the DLI chart and hours you run the lights.. with co2 -- 18 hours -- 1000 ppfd is up near max.. and you don't want to reach max here because you aren't doing everything optimally -- i dont say that to be mean.. to get this high you need to be dialed in in all ways possible .. laboratory type precision. without co2 18 hours -- 667 ppfd -- not as crazy as the max with co2, but similar concepts.. could probably shoot a bit higher than this depending on how high your lights need to be.. hotter lights need to be stronger at a higher height. more lost to absorption etc.. 12 hours -- same strictness above, more so with co2. with - 1500 without - 1000 you can see those ar ebasically 43DLI / 65DLI at those lengths of time... don't go over that .. run at X hours? where do you hit 43 or 65? that's as long as you want to go. if it's less than ~15 hours, logic dictates that you shouldn't have both on, for example, or it might start to flower, or you run longer and hurt your plants with too much light.
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