Originally Posted By: sullpond
Secchi readings are now 16" up from 6".


I'm a newbie--what is secci rating and how is it measured? My pond has not been evaluated and I'd like to figure out if my aeration is doing anything.


Bennie
LMB, HBG, YP, CC, FHM, located SE Michigan
1/3 acre 8-9' deep, aerated 24/7 1/4 hp rocking piston