So I have started my very first saltwater tank. It's a 20 gallon long with about 25 lb of live rock, and a substrate of crushed sea shells + aragonite.
I have a emperor 400 filter and was wondering if I can throw in some live/ base rock rubble in the back. will this be any use? and what would you reccomend me putting into the gray media trays? I was thinking purigen.
I have a protein skimmer good for 80 gallons and two power heads.
Is this a good setup, or am I missing anything, or do I need to change anything?