It's the sentence "part of the UV cycle" I never have heard of before. What is the UV cycle and how does blue and green wavelengths fit in there.
Sincerely Lasse
Sincerely Lasse
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I found his Radion settings and programmed them in just to see what they looked like. Maybe I’m used to a blue tank but I found his settings crazy bright. It’s stupid really cause I live in the sunny south and I know that things thrive under serious sunlight and if I had corals bleach it would be because I didn’t have them placed in the tank correctly, not because the “sun” was too bright. But, It still kinda scared me. When I turned the lights on with his settings the first thing I thought of was “bleached corals.” I chickened out and changed them back. If I didn’t have $1000s invested in coral I might try it.Elizabeth, do a search for Dr Sanjay Joshi reef tank. He runs his Radions at 100% on all channels, but he has them up really high over the tank. While his tank is only now about 80% of what is was, I think that his tank is one of the best examples of what you can achieve with Radions, but he runs them differently than most people do. I think that EcoTech and even ReefBuilders have videos (err, advertisements) of his tank. You will not see very much algae... not any more than a normal tank of which all have some amount of algae and cyano.
I said cycle- better words " Wavelengths"It's the sentence "part of the UV cycle" I never have heard of before. What is the UV cycle and how does blue and green wavelengths fit in there.
Sincerely Lasse
I never discussed it with Nick at the old BuildMyLED, but they once marketed a 'refugium light' that was mostly red, if I remember correctly. Nick never did anything without a good reason... I visited him a few months ago and toured his manufacturing plant (Fluence Bioengineering) and saw rows of walk-in bio-chambers where they were testing effects of spectra. They partner with universities where plant tissues are then tested for various compounds. Not sure if they did this sort of thing with marine algae.Generally speaking, both TI and TII phytochromes do better from 450 to 800nm. However, this is not really what matters, IMO. The issue is will "more cause more?" Here you have to get anecdotal... and people with lights that have a good amount of this spectrum do not really grow algae much better than people who do not have as much... both can be troublesome (or fine) based on other factors.
Yes, algae will grow with red... but will a lot of red make it grow better? It does not seem like it when you observe many, many tanks and systems. If so, people never would have used 6500k and 10k MH or grow stuff under natural sunlight.
If you are running any kind of white light, then you have enough red to grow algae. If you are running anything above 425nm and certainly 450nm, then you still have enough light to grow algae. If you have algae issues and also keep coral, then look to other places than your lighting, IMO.
I´m with you in this. Especially if you use low Kelvin LEDs.Again, I do not think that anybody is saying that red light will not grow algae, just that there is already enough for it to grow out of hand if you are using any other "white" light source.