This reminds me of the 6' PVC trees I put in 5 gal. buckets and dropped in HR 2nd. creek (ea. bucket had 10/15 lb. of concrete) their were about 20 trees in all in one area. Thought I was set for life, WRONG! After the water pull down and the refill started went to check on them could only locate a few of them. I would never have thought they would sink that deep. I guess I should not have put them so close to the bank.
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