I got a 125 gallon fish tank. I have put on a filter and a protein skimmer. my question is do I have to put live rock in it? its is really exspensive, and I want to just put around 10 lbs in there. I want to just put regular rocks in there to create caves and hiding places. I have live sand , too.
Yes live rock is expensive. What you can do is use non live rock to build a majority of your aquascape. Then seed it with some live rock here and there. After a few months you won't know what was live or not.
Right - try some dry rock. That's usually around $2/lb versus the $5/lb for cured rock. Live sand doesn't necessarily do the same thing as live rock, so it's more or less irrelevant in this scenario.
I suppose you don't HAVE to have any live rock at all in your tank. I've seen guys who just throw some PVC piping in there for the fish to play in. Make sure you have good biological filtration elsewhere, though.
Thanks! I got 95 lbs of dry rock.
I use dry rock to build the majority of my reef and then build over it with live rock