I don't think the weight of one hose filled with water is enough to overcome the weight of another hose filled with air. Once the water filled hose is in the water, the only weight will be of the plastic that the hose is made from. I don't know if that plastic is denser than water or not.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).