your sand bed suports nothing compared to the rock, what you do have to do is creat breading grounds behind your rock consisting of rubble in piles as big as you can make with small enough rubble that the mandrin cannot get into them to eat all the pods.
Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*
Some strive to be perfect.... I just strive.
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