60PSI will raise diesel about 50m. That's less than 17th floor, but it's worse than that because at the top of that 50m pipe, you get zero flow.

If you drop back to 30m of lift, you get still have 36PSI which is enough to get some flow. But that means that you need a holding tank (or lots of buckets) and another pump for another 30m of lift. That gets you to the 16th floor so you need another holding tank and a another pump.

That's a lot of complication. And getting those pumps to sit still can be a challenge.

Hahaha, we tried! Aquarium pumps were all that we were able to source. "Serious" resources were being deployed (appropriately) to hospitals, etc., so we had to make due with what we already had on hand. Thankfully we had an office aquarium, so...