Ours is not just an idea, we have been growing Diatom Algae in aquariums, ponds, lakes, drains, etc., since 2005. Our product Nualgi was invented specifically to grow Diatoms in large waterways. It is available commercially. Unfortunately people are reluctant to put in the effort required to understand the real solutions to problems.
All issue raised by you are answered by our product.
What do fish eat?
Why aren’t fish consuming the algae that blooms?
Today you frequently SEE algal blooms with your naked eye, this algae represents algae that is NOT consumed by Zooplankton and Fish, because if this algae were to be consumed, you would see the Zooplankton and Fish and not the algae. But no one asks why this algae is not being consumed by fish, and which algae is consumed. Algae consumed by fish cannot be seen, since it is consumed.
Diatom Algae are the natural food for fish, they are Brown, have you ever seen a lake brown with a bloom of Diatoms ? This is because Diatoms are consumed, so they are not seen.
Our product, Nualgi, is made of silica, so it is consumed by Diatoms and not by other algae, since only Diatoms have a silica shell and hence require silica. Thus we can ensure that only Diatoms grow.
Diatoms never ‘dominate’ a lake, since they are consumed by Zooplankton and Fish.
Dead Diatoms, if any, sink since the Diatom shell makes them heavy, same question - have you ever seen a lake brown with a bloom of Diatoms.
Diatoms are NOT a single species, there are a vast group with about 100,000 species. Nature has allowed them to dominate waterways in the past 200 million years and when they dominate the water is clean and well oxygenated, in winter and spring and in summer when Cyanobacteria dominate the water quality declines. This is quite well documented in scientific papers, unfortunately ignored by most people.
Very few people who write about water and algae know about Diatoms.
Please read about them.
Understand why water is clean and well oxygenated in winter and spring, and why the same water is ‘dirty’ with an algal bloom and has problems in summer and autumn.