If you live near the ocean you can do what Paul b does and just get some mud from the ocean and put it in your tank. I hear people put straight garden soil in their tanks. Make sure there is no fertilizer though.I'm on the verge of finally filling a used 12 gallon aquapod I bought a few months ago. This will be my first reef tank. I've had many freshwater tanks over the years, with a recent focus on delicate anabantoids. I've been planning for a while, and I decided I was going to run the tank as "dirty" as possible. No mechanical filtration (partially because of how the aquapod AIO back is constructed), a mini fuge in the back, live rock, chaeto from the LFS sump, no quarantine (at least for the first fish, I might quarantine other fish I get) just a simple coral dip, tap water, etc.
The goal is to not stress about hitchhikers, make my mistakes in a low risk environment where they can be cheaply and easily corrected, and to create a diverse and interesting biological environment.
My problem is that it's hard to get real live rock anymore, at least cheaply and in the small quantities I want it in. It seems like the easiest option would be to get "live" rock from the LFS. This is just rock that's been in their tanks for a while. At least one of the LFS bleaches the rock before putting it in the "live" rock bin, which I have mixed feelings about.
How different is this "live" rock compared to actual ocean live rock? Will it actually make a difference which type of rock I get for my specific case?
Should I look into just getting live rubble?
Should I just bite the bullet and buy real live rock?
What are good places to get live rock these days (KP aquatics is one I think)?