Thank you TUMS for your time to give so much info. I was mainly talking about the Phytoplankton. I am sorry I forgot to include that the first time.

The FA questions arise from my past observations of the pond. This will be the first year since renovating. Prior, I never noticed a phytoplankton bloom, but might have had them not realizing what it was. Now I am gaining some knowledge to recognize the difference. All I noticed over the last 20 years was how bad the FA got. I am wondering if the FA was keeping the phytoplankton bloom suppressed. Yes, it could have been many other things too. This year I am seeing FA again, and I just don't want it to interfere with a bloom, like using all the nutrients that it needs,if that can even be the case.

Sources never seem to say an actual temperature that phytoplankton starts. You are the first that I have seen to say a temp range. Most will be vague, and say that when it gets to warm it dies back, global warming, yada, yada. It must have to do with so many verities that grow in different temps?

I must have had some bloom in the old pond, otherwise all new life would have come to a halt ( if I underatand it correctly). I just want to make sure that I will get something going this year with the new fish stocked. I don't want something simple to get in the way of a bloom.