I am working on that also. I ran one ( and have since lost the rig I made up for the test ) earlier this summer and it was only 8 to 10 ". Right after I add the three to five hundred thousand gallons of water to the pond, it will gain some clarity, then grow worse each day until I begin the process all over again.
I haven't seen anyone weigh in yet on that issue, the nearly 3/4 of million gallons of water a month in the hot summer and what effect it may be having on keeping me out of even more trouble. I certainly don't know enough to make the call, it just seems to me that if it is sitting there brewing ( as I suspect ) and feeding on that intense sunlight and the water temp continues to climb, if I did not have the ability to add so much very cold clear fresh water ( which is helping keep the pond temps within reason ), I fear it would become even greener and the bloom so dense it would be unlivable.
Sure won't stop adding the water to try and find out, I am not that curious
