ok it a 30 gallon abour 4 months old. i have a penguin biowheel 350 filter, a 110 gph powerhead, a 170 gph powerhead, a 250 watt visitherm stealth heater. 16 pounds lr, 40 pounds base rock. 1 clownfish, 1 yellowtail damsel, 1 coral banded shrimp, 1 peppermint shrimp, 5 blue clawed hermit crabs...