Hello everyone! I'm new to forum but I've been reading threads for about 9 months which is about how long I've had my saltwater tank. It's 55 gallons sitting at 77 degrees, spg 1.025. So within the last 40 days or so I've lost my blue sailfin and my larger clownfish this morning. I'm about to do another water change today. My sailfin always had stress issues and was very timid. Had 2 battles with ich which I had to do a copper treatment which killed my starfish (according to my supplier). Even tho they told me they'd be fine, and I've lost 13 turbos total. I do a water change ever 2 weeks 25%, I clean out the filter ever 4 weeks. So far I'm down to one clownfish, very small and my 5 hermit crabs. I haven't hooked up my protien skimmer. I took out the bubble rock and stopped the blower because they just looked like they were constantly fighting the current and stayed far away from the bubbles. So about 3 weeks ago my water started to evaporate very quickly. Faster than it normally does. I took my water to be tested and the spg was at 1.030! So I started putting in freshwater as instructed 1 gallon at a time over the next few days. Day 3 sailfin passes. Clownfish seemed ok but I noticed the larger one had her mouth open! I tried hooking up the blower again thinking it was an o2 issue didn't help. Her mouth never closed. Looked for parasites, something stuck in her gill or an injury. Nothing. I guess I'm asking for any tips am I doing something wrong? I feel awful, heartbroken. Is this just a series of unfortunate events? Thanks for taking the time to read this, I really appreciate it. And I'm trying my best, still new but if I'm making an unknown mistake I'd like to correct it asap.

