What does it mean for algae to go sexual?

[Redbellyjx]

What happens? Is it bad for the tank?

[Triterium]

It means the algae enters sexual reproduction. The algae tissue falls apart, releasing gametes in the process.

Its bad for the tank since it releases a large amount of nutrients into the water. It can crash a tank

[rsteagall]

Thats why calupera should be last on your list of macro to use. When cheato goes sexual, its a little different. Cheato will break off little pieces as its form of going sexual.