>>2605973>It will naturally kill the algae that continues to make the water stagnant.If it only kills the algae it does nothing to solve the problem though since dead algae give the nutrients back. Explosive algae growth isn't the poblem, it's the symptom. But oxygenating the water can help animals to survive while too much algae rot.
>>2605977>native aquatic plantsReally only this.
Even if other factors prevent overblown algae growth, the nutrients stay. If there aren't enough aquatic plants to use the nutrients, algae will do so sooner or later. Which isn't a bad thing - only when too much algae grow the aquatic plants are starved of sunlight and rot. In addition to the dead algae there's so much material rotting at once it will use up the oxygen, causing bigger aquatic animals to die, causing more nutrients, causing more algae and so on.
The food chain will take the nutrients out of the water over time eventually, it just takes way longer if a big algae rot caused most of it to die.
Putting fish species where the habitat can't handle them and throwing in too much nutients are the things we should avoid.