IMO & IME running carbon in reefs is fine, if anything I find it to benefit my reef. I have great water clarity and I notice my water has less smell, also I have noticed more polyp extension on my SPS .
You'll be fine running carbon on your reef.
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20g BB Mixed Reef // Coralife 150w HQI // AquaC Nano // Koralia 1 & Seio 820 // Jager 200w // AC50
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