i need a scuba tank. i am into high pressure air precision airgunning. we call that pcp -precompressed pneumatic. i dont hunt, just compete in local matches here. where can i find a good second hand scuba tank here in dumaguete? or perhaps it is more practical to just rent. do dive shope rentout tanks to non divers? i need 2000psi to 3500 psi. in pcps, when a tank has 2000psi left, it is more or less considered empty and needs to be refilled. thanks.