Thanks for the comments everyone.
As for my setup, I started with 12 lbs of LR
, and added 31 lbs of base rock. Substrate is 40 lbs of aragonite sand. I have a Bak-Pak 2R skimmer, with an Aquaclear 402 and a Maxi-Jet 600 PH
on opposite sides of the tank.
I have no plans to get a larger tank in the immediate future, so the 37 gallon tank is it until I get further along the learning curve.
I knew about longnose hawkfish eating shrimp (none planned for my tank), I also read in Fenner's book about an Arc-Eye hawkfish eating 25 hermits in 24 hours. So I just wanted to make sure a longnose hawkfish would generally leave hermit crabs alone.