Originally Posted by Knobber
Follow up. My pond is still very clear. 7+ feet with Secchi Disk.

What is the proper procedure when using the Secchi Disk? I wear polarized glasses and take the measurements with a high sun at my back. If I strain and faintly see a glimpse of the disk, then I keep going deeper. Thus, I am getting pretty deep sightings.

The exactness of the method probably doesn't matter on a pond with plankton bloom and 2 feet of visibility. However, with my water clarity, the measurements can very a couple feet depending on my Secchi technique. I guess it doesn't matter as long as my measurements are taken in a consistent manner each time, and we are looking for relative changes, not absolute numbers.


Like you said, it doesn't matter as long as you are consistent. I try to measure as you described. Polarized glasses, sun behind me. I do not have the luxury to have the same sun angle at all times because I visit different ponds at different times of the day depending on my schedule.

www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).