Airstones were popular for me with my FW tank. But with the Reef tanks.. it's all about powerheads. Seio's are the bang for your buck IMO, and have TONS of modifactions that can be done with them.
In short... two air stones & your skimmer really won't do.. but they will. (if that makes any sense at all) .. having some surface agitation and overall water movement is very critical in the hobby.
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20g BB Mixed Reef // Coralife 150w HQI // AquaC Nano // Koralia 1 & Seio 820 // Jager 200w // AC50
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