I got back in the pool for laps today, without the kids even, which I've been avoiding since I recognized the poolwater has been giving me severe nasal issues.
I went in the cooler of the two pools at our Y (presumably with less nasty stuff in the water), wore my new Speedo noseclip, and did 1500 yards at a comfortable pace, using open turns, and stopping a few times to adjust the noseclip (ouch!) or goggles or stretch my crampy feet, etc.
Time? About 41 minutes - close to what I've swum in some races.
Sheesh! I must be swimming in circles in races or stopping completely to sight every 6 strokes or something!
Anyway, it's 3 hours post-swim and my nose is running like a faucet. Obviously we have not found the optimal solution yet. I've got a few more ideas yet to try, though.