Looks like one to me as well. Either it was recently introduced or has been hanging on and now the conditions are right for it. As long as it doesn't start smothering corals I would leave it. Its quite pretty actually.
Oh ok, now I remember. I had these in my sump about 9 years ago but haven't seen any in at least 7 years and forgot about it. Now it's growing in my display tank. Man, I can't believe they hung dormant that long! It even survived a tank move where i I had to expose the rocks briefly to air!
Can you tell me why I can't keep any hard corals then? Even frogspawn (supposedly beginner coral) dies. My alk is at 8.8 and cal is at 477 and salt is at 1.023. I am running Kessil AP700 light with a Octopus 150int skimmer. The only thing I have no problem with is softies. I will say my nitrates is 20 ppm thoght, kinda on the high side.It’s a sign of a very healthy mature tank.
Corals last about 2 to 3 weeks and then start to die pretty quickly. Tank is about 10 years old. Yes I drip acclimate everything for about 3 to 4 hours.Tanks looks good you got a anemone. Corals shouldn't be a issue. ... How long they last? How old is the the tank? Drip acclimate works best
Thanks everyone for your input. I guess water test is the way to goThe ICP one is $30 I think, but if you become a supporting member you can get them for $18 (not sure if that's still going on). The Triton one is more, maybe $50 or so - it's been a while since I bought them.
I thought hard corals can survive at 1.023-1.025?
Oh wow, thanks for the info. I no one ever told me salinity was most likely the reason my hard coral never survived. I will give it another go. Thanks so much!They can survive in phosphate levels of 2.0+, Nitrates 50+, and other abnormal variables, but these are not ideal. 95% of Acropora dominated systems will not run the salinity below 1.025-1.026.
Do you want your hard corals to “survive” or thrive?