OK, you've now totally changed the game: your post was a bit off-topic for this forum to begin with, but now it's utterly off-topic.

Swimming pool chemistry is predicated on attempting to prevent ALL microbial growth and activity in a pool. What you are talking about is a modified version of aquarium chemistry, where you are trying to ENCOURAGE some kinds of microbial growth, but DISCOURAGE others.

We do sanitation, which in brutal form, means we try to kill all invertebrate life in pools as quickly, effectively, cheaply and efficiently as possible, all without putting non-aquatic vertebrate life at risk or even discomfort.

What you want requires different chemistry; different chemicals; different equipment; different mindset . . . from anything here. Nothing wrong with that but it also means that there's nothing for you here.

You should check out aquarium, pond management, or "watershaping" sites.

Good luck!

Ben
Ben