250W DE bulds
- Thread starter bexi20
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Garage1217
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My fav bulbs right now are the EVC 20K bulbs in DE. Color is spectacular. Another outstanding choice is the Ushio / AB 20K's
Garage1217
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Still cannot figure your claim out. I have ushio / AB 20K's & also phoenix 14K's on an e-ballast. They look absolutely nothing alike color wise. The phoenix looks like diluted windex and the ushio is white with a violet hue.
Garage1217
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www.reefscience.com is the only place from what I understand?
Garage1217
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People always say bulbs like the EVC 20K are not that great for growth *LOL* I used AB 20K's with less measured par for awhile now and have had outstanding growth & color out of all my SPS types "70+ now" Growth also depends heavily on a multitude of factors besides just lighting. Once you get it all balanced, you can run a higher K lower par bulb with outstanding results.
Garage1217
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Well the 20K is very cool looking with a ton of actinic. Really makes things pop. I like it personally and it is my choice. I have not tried the EVC 14K.
Garage1217
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Three times the growth? Pretty impressive number 
I did not experience anything like that when I went away from phoenix bulbs to an even lower PAR 20K than the EVC, but there was a difference, but more in the few percent range. Colors however improved drastically for me when using a higher K bulb, and not just talking about a color change from the bulb color.
I did not experience anything like that when I went away from phoenix bulbs to an even lower PAR 20K than the EVC, but there was a difference, but more in the few percent range. Colors however improved drastically for me when using a higher K bulb, and not just talking about a color change from the bulb color.I did get better colors with the 20k evc, but a few of my corals quit growing all together or slowed down quite a bit. I love the color of that bulb. My favorite so far. It just didn't work well for me when it came to growth. Maybe if I had dropped the light down alot closer to the tank it might have made a little difference. I try to keep the light high enough that the household air conditioner in the house is enough to cool the tank. A chiller is in my future some time. Right now it's about 16" off the surface. Not to hijack the thread just trying to give info
I use an AB 20k over my 40g. It's an LPS tank so I can't say much about growth. The only way I could even see the par being down from my Phoenix is that my Bubble tip that's in there climbed to the top of the tank shortly after going to the 20K and has stayed there. I would guess it needed more light.
Garage1217
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<a href=showthread.php?s=&postid=15295038#post15295038 target=_blank>Originally posted</a> by ssamick
I did get better colors with the 20k evc, but a few of my corals quit growing all together or slowed down quite a bit. I love the color of that bulb. My favorite so far. It just didn't work well for me when it came to growth. Maybe if I had dropped the light down alot closer to the tank it might have made a little difference. I try to keep the light high enough that the household air conditioner in the house is enough to cool the tank. A chiller is in my future some time. Right now it's about 16" off the surface. Not to hijack the thread just trying to give info
Wow that is pretty high but understandable with a 30G. The actual bulbs are around 8" off the surface of the water in my 90G. What temp do you keep your home at..? Any fans..? I had a 150w over my 18G long ago, never had any temp issues. I did keep my house around 72 then. It also had a behind the tank sump which probably aided in cooling.
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