@Opie1
About 3 days prior to flower, increase the light intensity a bit. For example, when I switch to flower, I go from around 450 umol in the veg room to 800ish umol HPS bulbs in the flower room. Before flipping to 12-12, I’ll veg them in this room under the new lights for around 3 days so that they can adjust to the dimmed HPS in the new light intensity and spectrum. After 3 days, I’ll switch the timers to 12-12, and at this point, increase light intensity to 750w, then 825w a few days after. For you, this might involve raising your new light up, or dimming it, then once you’re ready to flip, lower the light or crank the wattage up. Whenever you make changes to the environment, it’s always better to do so gradually. In fact, you can slowly back the hours of daylight off from 18 to 12 with healthier results. Mimic sunset by turning one light off first, and the same with sunrise. Any intensity larger than 1000 umol will require co2 to be useful, and past 1600 umol can become toxic to the plant in general. An 750 watt HPS puts out around 1000 umol of light, with around 4x8 coverage. A 350w LED can also put out around 1000 umol of light, with far less coverage, around 4x4, and the intensity toward the edges is more like 750
I like Mars Hydro LED boards, they use Samsung diodes and have lots of infrared light for better flowering under LED.
Amazon they’re 150-250$.
The king of sticky dank flower always will be 2100k double ended HPS lights, and unless you have a basement, they need an AC unit to produce good flower. There is no replacing the effect of UV light in terms of resin production. UV LED’s can be purchased, I’ll be looking into this next summer.
Winter is coming… it’s HPS szn