If I had to guess- black cowrie. Not quite reef safe but very sought after for FOWLR aquariums. Costs $37 on live aquaria. If not that, Black Sea slug??
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I've made a lot of upgrades and put on a lot of equipment but I can't remember all of them. The skimmer is a tunze 9001, ph are jabao wp40s(I think), and I got a Red Sea Test Kit for mag, cal, and alk. a lot of small stuff.
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I have a ridiculous amount of corals... since starting I've gone through a nitrate spike of 100 because my RODI system was exhausted and dumped 1ppm ammonia water into my tank. Needless to say, water changes did not help... some coral died with that fiasco. Rn I have a phosphate spike probably...
Definitely not. It has no feathers and is just a solid mass of tissue with lots of holes. A little hard to tell in the photo.
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There's also aiptasia lol. That's why I did dry base rock. But I have to admit all the life on this rock is pretty cool.
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