I'd take the shrimp out at this point. 3.0ppm ammonia is just dandy to get your cycle going. From my experience, if it goes too high it can slow the cycle down - but not harm anything. If you don't have a nitrite or nitrate test kit yet, now's the time to get it. After a week or two, you should see your nitrites start to go up. At the same time, or shortly after, your ammonia will start to decrease. After your nitrites have peaked and start coming down - or at least not going up anymore - you should start to see some nitrates. As far as you current water parameters go, nothing looks "nutty"... just normal for a cycling tank. Expect to see the pH vary a bit as the cycle continues.
Also... you don't really need the bubbler for a saltwater tank. Oxygen is absorbed at the surface, assuming you at least have some surface ripple going on. And with a HOB
, you probably have enough surface ripple as it is. If you like the looks of it, cool - but you don't need it.