My first Aqua Mira trip was a 4-dayer last July in the Blue Range Primitive Area, which is on the East/Central border of Arizona. Since much of the trip meandered along the Blue River, I didn’t think water was going to be an issue. However, it was the monsoon season, complete with spectacular thunderstorms (and one short hail storm) every afternoon, so the “Blue” river was actually a swollen opaque brown and saturated with silt. It turned out to be fairly challenging to find side streams and pools of clear water that day.
For me, I want to find a prefilter that’s more aggressive than just mosquito netting or a bandanna. I tried to filter the river water through paper coffee filters, which was my coffee system at the time, but that didn’t work. I’ve looked at the Steripen pre-filter which screws onto the top of a nalgene type bottle, but that seems too over-engineered somehow. I’m also considering using my MSR mug-mate coffee filter (my current coffee system), or getting a 2nd mug-mate as a dedicated prefilter or, as someone else previously posted on this site, make a homemade prefilter with a chunk of permanent coffee filter material.
Otherwise, the Aqua Mira worked great, i.e. I didn’t get sick (although it’s hard to say if I would’ve got sick had I not used it…). I’m going to continue using it as my main water treatment (always using the full dose), but I want to find a better pre-filtering system.