I was recently at a LFS and I saw a unique piece of LR. I’ve only added LR at the beginning of a tank set up. My tank is a little over a year old. Is there anything I need to do as not to introduce anything unwanted into my tank?
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Put it in a tote with a power head and heater for a few days to see what or if anything comes out. Note that there still may be things inside the rock that you wont be able to see.