Pond Boss Forums INTRO Questions & Observations sechi disc

So if you are a cheapskate who is going to make your own secchi disk (like moi ), I suggest you try to replicate the standard configuration (based on the Vatican City Navy original specifications) as much as possible. IIRC this is an 8" disk with alternating black and white quadrants. This could be done by adding black electrical tape to two opposite quadrants on an 8" circle cut from the above mentioned white lid. I made mine using white electrical tape on a black semi-truck mud flap remnant. The e-tape on plastic will stay together good in the water over repeated usage.

Bruce, would you care to clarify any wrt offical secchi disk size and weight requirements? I believe hanging it on a string may be the official suspension method, although mine is screwed to an old broomstick. How about usage method? You can get a big difference in reading depending upon whether the pond has direct sunlight or if it's cloudy.