pvc cave

Mine always sank, are you sure you have PVC and not something else? PVC should always sink, other plastics may float.

Also, have you ever been to Reef and Tails in Wyomissing?
 
ok so i found the deal with the sinking PVC the drain and vent PVC is as Aquarian cellular core and PVC for drinking water is not and sinks. charlotte pipe black label will float and red label will sink
 
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