[archy]

I wonder how hard it would be to incorporate a water filter into the inlet to keep the bladder from accumulating gunk from the water.

Got a couple of clean, food-grade 5 or 6-gallon plastic buckets with lids? $30 on this one [video and description at the link]

[FourPeas]

After posting I went back to read more on the bladder and wha’d’ya know, there was a link to that very filter. Looks like a great idea — a summer homeschool project just waiting to be made.