I would think if you add cured live rock, at about 10lbs. at a time or even 15 , I don't see how there would be a problem. Please correct me if I am wrong... but if it's cured live rock then it shouldn't do any damage.
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20g BB Mixed Reef // Coralife 150w HQI // AquaC Nano // Koralia 1 & Seio 820 // Jager 200w // AC50
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