Hello again. Setup my 58 Gallon used tank. Have been running it now with the PC on for 5 days. My water is now at: Amonia=0, Nitrate=0-2, Nitrite=0 and a PH of 8.3. I was afraid my LR was actually dead rock but it turns out it looks ok. Question: Do you think I should wait a bit before adding any livestock to the existing 4 hermit crabs. (My son is itching for this) The hermits seem to be doing ok. Water had a tiny amonia spike on day 2-3. Uncertain of my next step at this point. Don't want to mess anything up. Thanks. 8O