Superglue works.. it's just a PITA, and it's messy. Usually, you take the frag and rock out, place a generous dab on the rock, place the frag. Hold in place for a few seconds, then place it back under water (still applying pressure) It will bond then.
It's messy though.. at least IME, and quite the pain!
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20g BB Mixed Reef // Coralife 150w HQI // AquaC Nano // Koralia 1 & Seio 820 // Jager 200w // AC50
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