Treefer32
Valuable Member
The problem: I have 3 Hydra 52 HD fixtures and 4 80 watt T5HO lights across my 340 gallon - 6ft x, 3 ft, x 31" tall.
I have 2 gonipora colonies about 4-5" from the bottom of my tank (par tests showed around 120) at the level the Goni's are at..
The Hydra fixture on that side (At around 120 Par) had multiple diodes burned out (3 diodes mostly whites and yellows in each circle of lights so approximately 12 diodes burned out on that fixture. Most all my SPS on that side are doing great (around 250 par at the SPS level).
My gonis have closed up and not doing anything for the past 2-3 months. They used to open huge and now don't open at all. Had some Briopsys grow in thick on that side of the tank. So, trying to figure things out. 2 days ago I decided screw this, instead of trying to cough up $600 for a new light, or $300 to have it repaired, I decided to swap that LED with one of the other LEDs that have most of the diodes fully functional (3-4 Diodes burned out instead of 12).
Within 24 hours of swapping the lights the gonis are now showing signs of opening the tentacles extending out from their skeleton more than they have in the last 3 months.
I think this goes to show anecdotally a difference in Spectrum impacts some corals than just Par or strength of light. I don't know why white light would make that much difference. I'm told it's the blue spectrum that matters to corals and the blue spectrum is very strong on that side. 1/3 rd of the tank is always blue at night when my T5s shut off.. But evidently the blues are not enough.
I have 2 gonipora colonies about 4-5" from the bottom of my tank (par tests showed around 120) at the level the Goni's are at..
The Hydra fixture on that side (At around 120 Par) had multiple diodes burned out (3 diodes mostly whites and yellows in each circle of lights so approximately 12 diodes burned out on that fixture. Most all my SPS on that side are doing great (around 250 par at the SPS level).
My gonis have closed up and not doing anything for the past 2-3 months. They used to open huge and now don't open at all. Had some Briopsys grow in thick on that side of the tank. So, trying to figure things out. 2 days ago I decided screw this, instead of trying to cough up $600 for a new light, or $300 to have it repaired, I decided to swap that LED with one of the other LEDs that have most of the diodes fully functional (3-4 Diodes burned out instead of 12).
Within 24 hours of swapping the lights the gonis are now showing signs of opening the tentacles extending out from their skeleton more than they have in the last 3 months.
I think this goes to show anecdotally a difference in Spectrum impacts some corals than just Par or strength of light. I don't know why white light would make that much difference. I'm told it's the blue spectrum that matters to corals and the blue spectrum is very strong on that side. 1/3 rd of the tank is always blue at night when my T5s shut off.. But evidently the blues are not enough.
