Sorry about my post being a bit sparse. Tank's been up n going for about 2 years. 34g all in one. 25lbs live rock 3" sand bed. I've had 1 bangai cardinal for over a year probably closer to 18 months. Also had a fire shrimp the same amount of time. Two weeks ago I added 4 small chromis of about 3/4", a small fire fish of about 1" and a royal gramma also about 1".
Don't hate me but I didn't quarantine and yes I know it's risky. I've tried in the past and never had any success in a QT tank.
All fish were drip acclimated for 2.5 hours in a dark room. Then added into a dark tank. Next morning everything was swimming and eating hardily.
Three days after addition 1 chromis dropped and was never seen again. 1 week later another chromis dropped. This one was expected as I saw what appeared to be a bruise on it's right side. Figured it had a rough ride to the pet store. Didn't notice at the store but did once it was home.
Royal gramma dropped a couple days later. I see nor saw any signs of ick or other disease. Nothing was picking at these fish. All were eating and active up to the day before death.
Temp is 77.5 Salt 33ppt ph 7.8, nitrate was 8.88 Sunday (hence the water changes). There is some small amounts of cyano in the tank that I've been sucking out. I've also been vacuuming the sand bed to reduce nutrient build up. I've been doing this slowly. About a 6" square at a time. I've been doing this for a week or so. I've concentrated in one patch over the last three days and plan to move onto a new patch tomorrow.
I've been feeding twice a day. flak or small pellets in the morning. Frozen mysis, brine, dragon roe at night. One variety, not all at once. Also only what they can eat in about 2 mins.