hey guys. so i just set up my tank awhile ago.
How long ago is "a while"?
put in my first two fish on the 10th. a green chromis and a sailfin tang. along with 2 cleaner shrimp and 10 hermit crabs.
Ok, when adding stock, you need to consider all that you are adding - not just the fish. Also, Sailfins can be quite delicate and are highly susceptible to disease, and do not handle stress well. This should not be a fish added to a new system.
and on the 13th i got over confident and added 4 more fish. 2 perculis (Percula) clowns. a blue tang. and a yellow tang. along with another 2 cleaner shrimp and 12 hermit crabs.
Yeah that was probably not the best thing to do. In 3 days time, you went from allowing your tank to settle after its cycle, and stabilize it's self - - to all the sudden supporting a full community of fish and inverts. More than likely, you just seriously overloaded your bio capacity. It is imperative to add fish slowly to these systems because they allow the bacterial colonies to increase at a decent rate to support the needs of the overall system. When you (Figuratively) dump a bucket of life into it in a very short amount of time, you can over-load these colonies, which then become ineffective at carrying out their functions. This can cause fluctuations within the water and induce stress on the animals.
so everything went well the first day. they seemed lively and were feeding.
That's usually how it goes - - and a big False Indicator to the aquarist that everything will continue on this happy trail.
the second day the fish seemed well. and today. when i went to go feed them three fish died.
I have a question for you - Did you take the time to properly acclimate these animals? And more importantly (for the bigger picture) did you bother to quarantine a single one of them? Doesn't sound like it. Sounds to me like they went straight from the store into your tank - Big No-no. See, all fish are highly susceptible to stress. The marked differences are noted in how they COPE with the stress. I wouldn't be shocked if one of your tangs was a recent victim of this loss, as they are the more delicate of the list you provided. When animals are transported from the stores to your home, they are already vulnerable to shock, infection and disease, as their immune system is only a fraction of it's strength when the animal is stressed out. You would be shocked to know just how many animals you purchase - which appear healthy from the outside - are actually hosts to a number of viruses, bacterias and pathogens, which may, at the fish's peak of health, have no detrimental affect on them.... However, in a situation where their immune system becomes compromised, and in addition, other animals in the same state are exposed, these dormant "bad guys" can wreak havoc in a relatively short period of time.
i checked my water parameters and this is what it read. ph:8.2 nitrate:0ppm nitrite:0ppm ammonia:0ppm the water temp is 77.9 whats going on? is my water temp to low?
All of your parameters look good, and no, your temp is fine, within an acceptable range. It's hard to say what has happened exactly, but above I have outlined some potential scenarios. I am curious, which were the animals which died? Did you look at their bodies, notice anything different?
Have you looked at the other residents still living, do they show any signs of infection/disease? Do you check any other parameters within your tank? Calcium, O2, etc.??