2 ati bulb combo to make 18k?

[AquaJunkie]

Looking for 2 ati bulbs to supplement my radions.

Will mainly be using t5s for shadows so bulbs need to match my radions schedule which is sps ab+ (18k) so it blends colours.

So... is there any 2 bulb combination that can give me the ab+ (18k) look or as close as possible? Was thinking..

Coral+ and blue+
Or
Blue+ and purple+

 

[Jhuggins]

I dont run radions but i have ran a black box and halo with ato t5. I love 2 blue plua but at first i did the purple plua and blue plus and it was way to white for me. I really like 2 blue plus

 

[nervousmonkey]

I'd definitely go with the blue+, I don't personally prefer the purple+ although I run one in an 8 bulb config, so it doesn't stand out as much. If you aren't using the T5 bulbs for growth or extra PAR, try a Blue+ and an actinic. I run that combo on channel 1, so I run those at the beginning of the day and the end of the day, and the color is incredibly nice to look at. That combo will get you upwards of the 18K program you're running, so it will give some great color pop and eliminate the shading. If that's your goal, I'd go with the B+ and actinic combo. Here is ATI's reference on bulbs: http://www.atinorthamerica.com/bulbs.php
It doesn't seem quite accurate according to what my eyes tell me, but my eyes are a super inaccurate measurement of the Kelvin scale. E.g., they state that their coral+ bulb is ~15,000K, but that bulb looks really white to me, but I'm not the lighting expert. @saltyfilmfolks is our resident expert, and can give a much more accurate answer than I can.

 

[pa1ntbru5h]

I also have a 2 bulb T5 to supplement my Radions on SPS AB+ to combat shadowing on my frag tank.
I went with the ATI Blue+ and Coral+ because I heard this is the best combo for color and growth.
This combo brings a little more white into the mix, but the corals still look great.
I only have my T5s on for 2 hours per day. My Radions are on 12 hour ramping schedule.

You definitely wont regret adding T5s. Now I'm even contemplating switching to a hybrid T5/LED for the display tank.

 

[saltyfilmfolks]

I'd definitely go with the blue+, I don't personally prefer the purple+ although I run one in an 8 bulb config, so it doesn't stand out as much. If you aren't using the T5 bulbs for growth or extra PAR, try a Blue+ and an actinic. I run that combo on channel 1, so I run those at the beginning of the day and the end of the day, and the color is incredibly nice to look at. That combo will get you upwards of the 18K program you're running, so it will give some great color pop and eliminate the shading. If that's your goal, I'd go with the B+ and actinic combo. Here is ATI's reference on bulbs: http://www.atinorthamerica.com/bulbs.php
It doesn't seem quite accurate according to what my eyes tell me, but my eyes are a super inaccurate measurement of the Kelvin scale. E.g., they state that their coral+ bulb is ~15,000K, but that bulb looks really white to me, but I'm not the lighting expert. @saltyfilmfolks is our resident expert, and can give a much more accurate answer than I can.

I also have a 2 bulb T5 to supplement my Radions on SPS AB+ to combat shadowing on my frag tank.
I went with the ATI Blue+ and Coral+ because I heard this is the best combo for color and growth.
This combo brings a little more white into the mix, but the corals still look great.
I only have my T5s on for 2 hours per day. My Radions are on 12 hour ramping schedule.

You definitely wont regret adding T5s. Now I'm even contemplating switching to a hybrid T5/LED for the display tank.

I agree with these. If you feel its a more blue tank get 2 B+. I believe the par is comparable. The only issue Id concern myself with would be the led overpowering the T5.