I found new pic coparison
Full tank with brand new 20k
Full tank with 20K after a two week period
Left side of tank with Ushio 10K
Left side of tank with brand new 20K
Left side with 20K after two week period
Quote:
From dave grigor:
A couple of points to add.
The 10K Ushio pictures includes 1X110W 50/50 & 3X110W actinics.
The 20K pics are MH only no supplementation.
Ballasts are the 400W Blueline.
I have some closeups of a number of different corals that I took just before replacing the 10K with the 20K. Will take new pictures about 4-6 weeks to see it any coloration changes.
The biggest difference thus far from the 10K to 20K is the green colors and LPS. With the 10K the greens turned light in color closer to a yellowish look. With the 20K bulbs they instantly looked much better and showing early signs of regaining the green color. ( Look closely at the green pagoda cup on the left side for comparison ).
Also ever since I started using 400W ballast LPS never have reacted well. Most notable the open brains. Since switching to 20K all LPS look and expand better than ever before.
I did loose one SPS that was on the substrate. You never know for sure but I think the lighting intensity wasn't enough on the very bottom to support it. I fragged what was left and place higher up and doing just fine......
During the summer months I switched from running 3X400W down to 2X400W for heat and electricity reasons on the 6 foot tank. There is a noticable difference in brightness from the 10K to the 20K ( to the human eye ), PAR values from what I understand are pretty close. I beleive now that I don't have to run the 4X110W VHO and cooler months ahead, I will fire the middle 400W back up after next payday when I can get order another 20K bulb. Another reason for adding the center MH is so I can expand my higher light SPS more towards the center. As you may have noticed I am pretty much out of real estate and I just recieve 3 corals heads and 4 frags from Dr. Mac, 14 new frags from lonestarcorals, and a new clam ( Stocking up just before Winter hits as coral selections are sparse here in MN during winter ).
- Dave
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