They look very similar but are not the same product. I ordered the Cal Flo and think I’m going to use it on my dam to help grow grass in some heavy clay areas where my top soil has eroded. I think I’ll also try some in a bucket of pond water and give it a week and run another test.

Here is the Calis label ingredients

Guaranteed Analysis:
Calcium (Ca)............................................................................... 29.00% Calcium Carbonate (CaCO3)...................................................... 75.50% Magnesium Carbonate (MgCO3)................................................ 0.74% Calcium Carbonate Equivalent (CCE)....................................... 73.30% Calcium Oxide Equivalent (CaO)............................................... 40.60% Magnesium Oxide Equivalent (MgO)........................................ 0.50% Passing 200 mesh screen............................................................ 100.00% Passing 100 mesh screen............................................................ 100.00% Passing 60 mesh screen............................................................. 100.00% Passing 50 mesh screen............................................................. 100.00% Passing 40 mesh screen............................................................. 100.00% Passing 20 mesh screen............................................................. 100.00% Passing 10 mesh screen............................................................. 100.00% Passing 8 mesh screen............................................................... 100.00% Moisture Content (maximum).................................................. 26
Lime Score.................................................................................. 74 Effective Neutralizing Value (ENV).......................................... 73.30% Effective Calcium Carbonate Equivalent (ECCE)..................... 73.30%