Ecotech Marine’s Radion XR30w wins the 2011 Reef Builders LED showdown

[fishytime]

Originally Posted by MarkoD

I've never seen it pick at any polyps. But even if it did, why would he only go for the ones under the radions?

Before the radion, these same zoas were under the ai and open all day.

And how do you figure that 12 watts of red LEDs are beneficial to corals?

This weekend I'm going to try this out. I'm gonna have the reds on only, for the first 5 hours of the day. And I'll take a time lapse video of a zoa frag to see if it'll even react (open,close,twitch) at the red light

I never said that running all red would give great results, or be the miracle coral growth formula (in fact it wont).....but you said that. the red and green LEDs were useless, which they arent.....the red spectum gets filtered out of the water very quickly so deeper water corals tend to not take to red very well, but shallower water corals will benefit from lower color temperatures....the radion provides probably the closest to full spectrum lighting as wee can get atm

[MarkoD]

Originally Posted by fishytime

I never said that running all red would give great results, or be the miracle coral growth formula (in fact it wont).....but you said that. the red and green LEDs were useless, which they arent.....the red spectum gets filtered out of the water very quickly so deeper water corals tend to not take to red very well, but shallower water corals will benefit from lower color temperatures....the radion provides probably the closest to full spectrum lighting as wee can get atm

Thats exactly what I've read. Sea water partials absorb red and green light.

So how deep do you figure red light from 12 watts of led will penetrate?

I just want to see if a coral will recognize the fact that light is available