Quote:
Originally Posted by reefermadness
Its going to be too tough to compare though photographs IMO.
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Agreed. Photos are useless. Each camera will capture the color differently, and each screen will show it differently. And most 20k bulbs will look a bit different, and which ballast also affects it. If you run a 15k beside a 20k, the 20k will look too blue. If you replace the 20k with a 10k, the 15k will look too blue
If you then use all 20k, you'll wonder if it's blue enough -lol
The only real way to see it is to find a tank running 20k and visit in person.