All of them have long term negative effects if used improperly or frequently. Algone controls algae growth by removing key nutrients. If you have an algae problem, light or severe, Algone really makes the removal easy. The algae in your tank will die off within a short period of time. You can either easily remove the weakened algae manually or continue to use Algone until the tank has cleared up on its own.
Prevention is a snap .
Simply use Algone as a maintenance tool. Use as little as one pouch every 4 - 6 weeks.