How long have you had your tank established. I have a sea apple, but ive also had my tank established for 3 years. The are very tricky to maintain. My sea apple is always open, very brightly colored, if anything attacks it in any way it will release toxins in your tank. good luck
we r pretty new 2 the sea world, 5 mos. tank is 6 mos old. what will be perceived as an attack? crabs occasionally crawl on it, fish fins occassionally brush it, aside from that i don't think any being is aggressive towards it. it is not always open however. it usually closes a fair amount of the day i'd say 1/3rd. the rest of the time it is either open or open with tentacles about 1/4 inch out. it is brigtly colored. we feed it microvert 2 x /day (along with the corals). i put the food in the current so it floats in the direction of the apple a few times each feeding. sometimes it opens and sometimes not. seems to be open more later in the day with tentacles out as described above.
at times it scrunches up in the middle, it is rarely an oval shape though it isnt' any smaller than when we got it. it has a good hold on a couple of rocks with yellow feelers. currently it is closer to horizontal as one of the rocks moved accidently when i moved another rock.
i have clown fish, crabs, snails, mandarin, dwarf angel coral beauty, 6 line wrasse, pj cardinals,sea star, engineer and neon goby's, 2 aneomes's, various coral frags and a gorgonian tree, live rock and sand. any dangers there?
any concerns about any of this including the apple's behavior thus far? we don't want to harm it or others in the tank certainly. if we should find 'elvis' another home we can do that as everyone's wellfare is our interest. if on the other hand what i describe is normal then that is great.
we run a vertex protein skimmer in a sump and have a magnetic pump to simulate a reef environment for the tank.
what do you think? :bowdown: