I have a 9 week old saltwater tank. 100gallon, sump filter underneath, protein skimmer running in sump, 4 fish, blue lights run 8-10am, white lights run 10-6pm, then blue lights 6-9. Ocean reef salt, and was using a product called Stability, and live sand. For the last 2 weeks, my ammonia started rising to 1, and for the last 2 days has been at 4. I've have done a 30 gal
water change 4 times in 1 1/2 wks trying to lower it, but it just keeps rising. I got 25 obs of live rock 2 days ago and put in the sump (possible die off?) and did a water change but it is still at 4. All other readings are normal. What do I do? Only one fish has died, and there are 5 hermit crabs in there alive. Nothing is dead in the tank, and I feed lightly every second day. Nothing stays uneaten I can see. I'm lost. HELP!!!