My Lighting Bake-Off

Have you thought of hanging a black felt or curtain between the two lights so the spread from one side to the other is cut down?
 
Have you thought of hanging a black felt or curtain between the two lights so the spread from one side to the other is cut down?

I have, though using a curtain of tin-foil for now. Cuts spread form both side down to a strip across the center. I just won't put any coral there.
 
yup i wanna follow this too. some pictures of the setup would be great once you find out what you wanna use to post if not photobucket :)

i have problems with it too almost everytime i try to use it, like only uploads 80% of the photos, etc but i still find it the best to use on here
 
I tried to carry out the same experiment while I was switching over to LEDS. I could only afford to buy one LED light at a time so I left half the tank under a mH while the other half ran a new Kessil.
Problem was...as soon as the bucks were available, I had liked the performance and tank appearance under the Kessil so much, I could not bring myself to wait to replace the mH any longer.
 
yup i wanna follow this too. some pictures of the setup would be great once you find out what you wanna use to post if not photobucket :)

Just freezes up on me all the time. Patience may be a virtue, it just isn't mine. I will try however.
 
Do you happen to have a picture on how you have it setup?

Well, it was a hair-pulling experience, but here are some shots. Excuse the lousy photography skills. Shots from both ends of the tank. Need to check PAR - though I 'think' they are comparable MH look subjectively much brighter.





Most of the frags on both ends are from my main display. Got some others coming in a week or so and then the CT FFM in mid-March. At that point I should have the species necessary to run the experiment.

 
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I have taken PAR measurements. MH side was showing PAR in the 300 range (thought it'd be higher with 150 HQI over 10" of water). Had to ramp the LED's down a bit to match. Right now each 'side' has just some basic stuff. Green slimmer, purple digi, orange setosa, an aussie tabling acro, bonsai, ponape birdsnest, blue tort, and a few others.
 
Thank you so much for this experiment! Looking forward to the results.

I know you said you aren't trying to be very scientific...but this is obviously a lie, as you have already taken several steps to set up a good experiment. :lol:

It all comes down to eliminating extraneous variability. Keep everything the same between the two groups of corals. If you can't eliminate an extraneous variable, have it affect both groups equally.

You're doing a great job on this already! Don't be afraid of the detractors!
 
I know you said you aren't trying to be very scientific...but this is obviously a lie, as you have already taken several steps to set up a good experiment. :lol:

True! I am attempting to equalize both sides as much as possible. The problem is that it's a sample size of 1, which means no statistical significance. But it will be interesting regardless.

FWIW, and no surprise to anyone, the SPS 'candidates' I have in both sides so far look very different under the two kinds of lights. A few look better under MH, but most look better under LED. Should have all of the frags in there by about mid-March after which the 'watching paint dry' part starts. I've been able to grow some SPS into softball sized colonies in 6 months, but others take much longer. I'd imagine this experiment will take 2 years to fully play out. Tick, tock .....
 
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