Quote:
Originally Posted by Myka
PC - 6 months
T5 - 8 to 12 months
MH - 12 months
Yes, the reason is because of the changes in spectrum. 
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Actually Mika from the research i have done T-5 bulbs can go for about 2 years....
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500G Mixed Reef

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Electrician, Electronics Technician, I can help with any electrical questions you might have!!
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Kevin
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