Thanks Rainman and TJ, and that all makes sense with the tadpoles as I've only begun to notice the piping after they've gotten bigger but not quite to the frog/toad stage (getting big but still have their tails).

Regarding a test on the DO, no I have not and don't know how to go about it. I probably need to test the PH, DO, etc..

Attached is another photo taken this morning of the "floaters"

So sad!
Attachments
2-18-12, floaters.jpg

Keith - Still Lovin Livin

https://youtu.be/o-R41Rfx0k0
(a short video tribute to the PB members we met on our 5 week fishing adventure)

Formerly: 2ac LMB,HSB,BG,HBG,RES