Well, what kind of powertools do you have? Most anything will work. But with the small size PVC we work with on aquariums a $5-$10 handsaw will be through it in less than five strokes. I myself have cut 18" gray pipe (sewer line) with a handsaw and it is not hard at all. If you have a miter saw or any type of circular saw you could do it. It would work best with a fine-toothed blade but not necessary. You would just have to be careful with a wood blade to go slow or it will rip out chunks of pipe instead of cutting clean.
I don't think you can hurt the blade on anything with PVC. Can't think of any off-hand that it would, but it is also 4am here and I REALLY should be sleeping, lol. PVC cuts a lot easier than you think it does. Like I said we cut it with a handsaw on a production pipe crew where you do anything to save time. Of course when I had to do it I used my 19.2v Dewalt Sawzall to do it.
But I am lazy, lol.
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