Pond Boss Forums MANAGING AN EXISTING POND Fertilization Fertilizer

Bruce yea that is exactly my point. When looking at phyto blooms we measure the % DO saturation. If checked in afternoon after day of sunlight it can be above 150%. I have readings of 150% or higher quite often. This is why I say if 100% or less more than likely not from phyto bloom. Pretty good tool to employ along with secchi disc.