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Selling off some zoas Interested please pm or whatsapp 87529711 =) Sent from Singapore Reef Club mobile app

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Sorry to hear what you are going through. It’s always tough to watch the tissue slough away. FWIW, sounds like your acros are not bleaching(which happens when there is too much light), but actually going through STN/RTN. If you close up on the white areas & cannot see anymore tissue or polyps then it’s likely you are looking at the skeleton. hard to determine the causes, KH looks a little on the high side though. There’s some nutrients, so they may not be starving. The unknown is how stable are these parameters? Were these colonies all added at one shot? Maturity takes time too. Adding more flow was a good idea to help with circulation & hopefully the stronger specimens will tide through. Make sure the flow is not directly pointing at the corals. Meanwhile, would propose running some carbon & doing more water changes. If you have a lot of colonies & many of them are RTN/STNing, there’s a risk of a nutrient spike which is not going to help. Best to check that the new water has similar parameters to your tank water to prevent more instability. Try to siphon out as much dinos as you can - with the current imbalance, dinos are opportunistic & seem to have taken hold. So either removing them or adding competition such as macros will help. Fragging the colonies to save the healthy tissue is a 50/50, some won’t make it, some may provided tank conditions allow so. hang in there & hope this helps

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