A fire hydrant robbed and gave my dog weed now it's addicted! Now Neil Patrick Harris is outside my house riding a unicorn!!!
Ask to see the pedigree, akc papers, if they have been tested for genetic problems, how they are trained, how they are socialized, what kind of food they are fed, when they recieve shots etc. Also if you want to breed him, ask if that will cost more because some breeders charge more if you will be breeding it. You want a puppy that is socialized around a lot of people and children from the beginning, raised in the house, not in a kennel, preferably genetically tested (especially if you will be breeding the dog). I hope that helps!!!
I think you would be better off using PVC pipe. Its very sturdy, chlorine resistant, lasts for years when burried and comes in many diameters and pressure ratings. Fittings are easily installed and you can get it anywhere. For a fountain 15mm or 20mm pipe in class 9 should be adequate but you can go up in diameter if you need too. Its really cheap stuff and when primed/glued properly will never leak. If you use any fitting with threaded joiners use plenty of teflon tape.
They can cause fire. But the standards are considerably more strict than they used to be, so you shouldn't have to worry too much. Check the warnings on the package. Good luck!
