Bruce....with a way to turn them off individually.
What exactly does that mean? Haven't heard anything about that. No stranger to high tech growing. I started growing plants with ultrasonic sound 45 years ago. Absolutely amazing results. Doubles germination rates of hard to grow seeds and those and will half the time to germinate for those seeds that take more than two weeks to appear. But, you must stop it shortly after they sprout. It enhances the level of hormones called axions. Example, a bean plant with just two really tiny leaves that is 15 inches tall. Plants will actually grow in the dark.
Sound? way beyond what I do!!!
Sorry should have better explained the shut off part. Basically if using the red/blue combo the Red is used for leaf and plant health so if you have plants that are vine-based the red shift is a really good way to get a jump start on them before spring kicks in. Blue is for flowering and fruit.
So for stuff the are like tomatoes, using a Red shift LED using them the get the plant to grow strong and steady with nice green fussy leafs, but when they get to the point of starting to Flower/Fruit the Red needs to be much less otherwise the plant will continue the vine causing less food to go to the fruit.
So a way is needed to turn the two colors off separately. For me was easy, run Red & Blue LED powers out away from each other and power them separately.
I know it would be better to have single power with 556 timers, but quick/ dirty and working now is best when I'm testing.
For me its been trial and error for different plants but the tomatoes like this a whole lot. and if you're into cloning the better tomato plants, BOY is this the way to go.
Our current clones are too small so far, for fruit but the health is awesome.
Once outside is beyond frost outside they go.
Tell me more about the sound thing?
I knew M.E. News had done bio-sensory tests and had concluded they did have a frequency that could be detected , but that's as far as I paid attention to it.
You have peaked my interest