Considering Green Aqua video, the company intervenes in editing with various filters. So I would not be so confident in what we usually can see on videos on YT or elsewhere, unless it has not been edited. But then, can we be sure was it, or was it not.
We have a few posts about anthocyanins as <"sun-screen" in plants">. I think that nutrients may have some role in how red a plant appears, mainly because anthocyanins accumulate in the cell vacuole and <"are masked by the chlorophyll in a dark green leaf">.
The 24 ppm NO3 will be the minimum value that they recorded.
How much light for how long? Is sunlight “hitting tank” or “just in the room”
Perfect, in that case you need to substitute 8.6 g of K2SO4 for 10 g of KNO3.
Cut out KNO3 out my mix, it's been 3 weeks and hasn't made any difference to the rotala. Still pale the first half of photoperiod and then colour up the second half. Took a closer photo to illustrate the "problem" further.
That’s a pretty stark contrast!
It’s worth a shot upping the Mn or PO4, I’d test one at a time though, a single dose should show at least some noticeable change fairly rapidly if either of these are to blame. Can’t remember if you’ve tried upping the Zinc, something else to consider.
Super interesting and no definitive answers yet! The plant is most definitely effluxing overnight the compounds it produces that provide colour to the top leaves accumulated during the photoperiod.
I am wondering if the plant could be choosing to do this not as response to moderating the increasing PAR as it grows closer to the light source (it is producing compounds to deal with this energy hitting the leaves) but in an effort to increase light transmission to the lower more mature shaded leaves further down the stem as it grows taller?
I’d trim a top and plant it further from the light source and see if it changes behaviour.
Definitely true, I'm really interested as well. I wonder if we will ever get to the bottom of this one.
I hope we do, this is very confusing. 🤯
If there is any way you can make a time lapse video through night to day and back to night again over a minute or so to show the full display would be amazing, I think it would blow everyone’s mind! I know it would mine!
Discounting nutrient issues this feels like a light burn effect without tissue destruction, Chlorophyl and Caretenoids present in the morning, huge oxygen spike in the tissues as the light ramps then the caretenoids (and others) scavenge as much of the oxygen produced which then can’t keep up and the chlorophyl keeps producing excess oxygen so it gets flushed from the leaves to protect them, the caretenoids and chlorophyl only reappear again when the lights dim, overnight chlorophyl and caretenoids build up so the tissue looks almost at full health. Whatever the cause it appears the plant is able cope with this because despite the bleaching the tissues look in very good health.
