I have two 3 acre ponds on my property that have similar pH's both fluctuating around 7.4-8.5 depending on time of day. I have really struggled to get the the alkalinity up. right now its right around 20ppm in both ponds.

In hopes of a quick fix I added Calcis to both ponds and saw significant bump in calcium hardness and a little bump in alkalinity. I'd like to be in the 50-60ppm range and realize it's not an overnight fix.

Is it too aggressive to add 5 tons to the acre and then possibly repeat application in the fall? I'd like to correct situation and not have to lime annually.

Really struggle with getting a good bloom, but man am I good at growing FA! Hoping that by raising the Alkalinity it will work on the FA a little too... Cutrine Plus orders are killing me.