So I bought a torch coral two weeks ago. When I put it in my tank, the torch was extending perfectly (the second photo) then after a water change plus running the skimmer for one night( I don’t really use skimmer, I used it cause I think there is to many organic matter in my tank, probably used it once in a month). After that the torch have not fully extended (The first photo, it is very puffy but the tentacles are not extending). My No3 is 2, PO4 0.08, Alkalinity 5.7 ( in the process of fixing), Ca 450, Mg 1280, salinity 1.25. I think maybe alkalinity could be the reason but the torch has been in the tank for a week before not extending really well so it doesn’t seems it is the cause. Does anyone have any idea about this?
