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tenurepro
04/12/2017, 02:38 PM
Hello,
I currently run 2 x XR15w pro (gen3) in my Redsea Reefer 250, 35.5" long, 21" deep, 20" wide. The two XR15 are mounted using RMS arms, spaced equally.

I recently acquired another xr15 gen 3 to supplement the light in my sps dominated tank. I plan to mount the new radion in the centre, and move the other lights out a bit from their current position, so that all three lights will be spaced equally. I am using the 120 deg lens on all lights and i keep most of my sps on a 7 to 10" shelf below the water.

The current lights are running the SPS ab + program, at 70% intensity....Because in reeflink, you have to set all the lights to the same intensity, when i add the new light and keep intensity at 70%, i am thinking this will increase PAR levels, which can shock the corals. So i was thinking of dialling back the intensity on all three lights to compensate... but how much do i need to dial the intensity to keep par levels the same.

My naive guess would be to cut down the intensity by 1/3rd (because i am adding a third light). So add the new light and set all three to 46% intensity.
does that sound reasonable. I do have a par meter that i can use to double check par levels before or after, but i wanted to see if my guess is correct.

I also have another option. i have an apex with the wxm module, which does allow for individual control over each light. So i can put the third light in the middle, but set it to run at a very low intensity (10 to 20%), and slowly ramp it up to 70%

I hope that the Radion experts around will chime in about the best way to add lights to an existing tanks without upsetting corals.

thanks for your help and advice!

damienpbuckley
04/12/2017, 09:34 PM
Why don't you cut the intensity a bit and then set to acclimate back to where you are over 6 weeks?


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tenurepro
04/13/2017, 07:20 AM
That sounds sensible D


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