Yes, it will, but there could be a risk of it getting some fish also. Applying Alum to offset the pH shock that hammers the algae cells would not only neutralize the Hydrated Lime, it will bind phosphorus to greatly reduce new/continuing algae growth.

Adding more Tilapia might also be worthwhile in getting a handle on it.

Last edited by Rainman; 07/24/16 01:18 PM.