I liked my PM but I believe the dimming wears out the t5 ballasts. My ballasts failed after two years. I bought an ATI 6 bulb Sunpower while my PM was getting fixed and I feel like my tank did a little better growth wise with the straight t5 fixture. So I'm selling the PM, and added two led bars to my Sunpower.
I still think the PM is a great fixture, though.
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