Today I changed over my canister filter from a whale, 120 to a fluval 407. I also used our oh DI water for the first time in my saltwater tank to do an additional water change. My torch retracted and it’s making me scared my Duncan is good and my gsp as well but my Zoa closed but doesn’t look bad. My torch has never retracted so much and I’m nervous. Any ideas why. Too much stress? The tank is 6months old pho was 1 nitrate was 5 cal 420 but this was all before wc. Salt is 1.025 temp is set to 78 but maybe the water was to cold it was sitting out at room temp and was 2.5 gal