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very quickly,
If you are considering upgrading to a better t5 fixture take a look at the ati sunpower. why?
1. the ati uses t5 spec ballasts which run the bulbs correctly. youll get better performance and longer life out of the bulbs.
2. the ati has active cooling which again will equate to longer bulb life and better performance. the elite does have fans but still uses the "wrong" ballasts.
3. the ati has reflectors that produce a more narrow, focused, beam of light. and on your 55 this is a major bonus. with the tek and elite, the light spread is greater and on your 55 will be reflected away from the tank and be wasted.
there is a price difference. but the extra cost up front may easily be justified when you consider the better performance with the same amount of bulbs (25% over the elite and some have recorded 100% over the tek), longer bulb life (future cost savings), and in your case a more focused spread of light.
good luck
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I reef therefore I am
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