>>6021494fair's fair then. However, I think as soon as we find the ability to trade with the open market I think we should get the trout eggs then.
Also, you might not know this. But the fish could probably already live in the water with the algae after a few months. 2 years max. Even if the atmosphere is made up mostly of CO2, the algae will already have significantly increased Oxygen levels in the lake. You'd be surprised how quickly algae sequester oxygen and multiply when there is near-infinite CO2 and no predators.
Most algae in lakes have periodic growth and death cycles because algae at the top will absorb the CO2 faster than it can diffuse into the water(Especially in still water). So the algae will starve itself until the population is lessened. And then grows back to that overconsumption over and over again. Which leaves layers of dead algae on the bottom which animals feed on. It is actually quite fascinating. (Sorry if i am over explaining)