I spoke too soon about the Ardo Pump. I think I got scammed. It was probably already broken when it was sent to me. I don’t think it was actually supposed to be making that loud noise every few minutes. After about 2 1/2 hours it started flashing orange and displaying an error message that’s supposed to mean it’s unrepairable. I tried turning it on again and it did run for an hour or so before displaying the error message again, which is why I think it was already broken before it was sent to me, even though it was technically working when I first plugged it in. <meta charset="UTF-8">It’s true that you’re not supposed to use the Ardo pump for several hours at a time, but I’ve used my BB pump for 4 hours at a time for multiple days in a row in the past and it handled it just fine. The BB pump is a pretty cheap pump, but the Ardo pump is worth around $200 new. I paid much, much less for a used one without any “extras”.
I don’t want to give up on this yet, so I think I will buy another that claims to be open-box or “returned” rather than used. I have a feeling that a newer ardo pump might be quieter and stronger than the broken one that I just bought. If that’s true, I’ll post about it.