Stressed Yellow Tang
Last night i added a hippo tang to my tank, and everything seemed to go well. My yellow tang is usually fairly agressive, and was tail whipping the new fish for awhile, but after a couple hours seemed to leave him be. I was up pretty late and did a water test, and noticed my yellow tang gasping at the surface, but only for a min, then went back to the rocks. So this morning I've come to find my yellow tang hiding behind a rock, on the sandbed. It seems to be panting, but there are no discolorations. All other fish seem to be doing well, the hippo is still hiding, but seems happy. The hippo has taken over the yellow tang's "spot" in the tank. So.. is my fish just stressed? will it go away?
I also changed out a powerhead for a kora 4 so that i stop losing snails in the aquaclear. Coral's aren't too happy about this as they adjust, but now i'm wondering if it's the powerhead, or if its something in the water. Either way, i'm going to do a 25% waterchange once my SW mix is ready. hopefully this will clear some stuff up, and not stress out my yellow tang any further.
Tank tests:
Salinity: 1.023
Ammonia: 0
Nitrite: 0
Nitrate <15
KH: 10 (usually higher, been trying to bring this up the past couple days)
Calcium: 460
PH: 8.3 - 8.4 morning to night.
Temp:78 - this one could be major, since last night the temp was 84, so i left the fan on overnight(usually on a timer with the lights)
I've looked through a lot online, and i've seen that usually yellow tangs usually show the lines down the sides when they're stressed (the ones from nighttime), which my fish does not have. I don't imagine that i have ammonia poisoning, since i'm under a measureable range on my test kit, and also my fish does not have red coloration around the gills, and the rest seems fine.
anyways, if anyone has an idea of what could be up, let me know. thanks in advance.
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