Moving rock after the fact
I'm pondering the thought of moving some of my rock around. Right now, it's halfway between the back and front of the tank, so the fish can swim behind them.
I was thinking of moving it all towards the back. Two questions:
1. Is it wise to move rock in an established tank? If so, what is the best way to do it?
2. Is it better to have "swim lanes" behind the rock so the fish can scurry to a hiding place if needed?
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