could green leaf ultimate gh booster be killing my shrimp?

[mloispro]

I have had 5 shrimp deaths over the last week, I switched from seachem equilibrium to green leaf ultimate gh booster. 4 of the deaths are blue tigers, could this be the cause?

 

Guaranteed Analysis - Equilibrium: http://www.seachem.com/Products/prod...uilibrium.html 
Soluble Potassium (K20) 23.0%
Calcium (Ca) 8.06%
Magnesium (Mg) 2.41%
Soluble Iron (Fe) 0.11%
Soluble Manganese (Mn) 0.06%
Derived from: potassium sulfate, calcium sulfate, magnesium sulfate, ferric sulfate, manganese sulfate. Elemental potassium is present at a concentration of 195,000 ppm (19.5%). Archaic fertilizer laws force us to list potassium in terms of equivalence to a material that is not present (K2O) rather than the more scientifically sound method of simple elemental equivalence. 

The Ultimate GH Booster: http://www.greenleafaquariums.com/aq...h-booster.html
Description - Contains: 
* Potassium Sulfate (K2SO4)
* Calcium Sulfate (CaSO4)
* Magnesium Sulfate (MgSO4)
* Iron Sulfate (FeSO4)
* Manganese Sulfate (MnSO4)

 

The ingredients seem similar.. please help.

[DETAquarium]

It definitely could be, but the only way to know for sure is to stop using the product. Monitor shrimp over the course of two weeks or so, and re-evaluate. Have you tested other water parameters? 

[mloispro]

yeah here is what I have today:

PH: 6.9

KH: 2

GH: 5

TDS: 180

Water temp: 68F

NH3: 0.001 ppm

NH4: 144.88 ppb

 

is there anything else I should be testing for?

[Aennedry]

Ammonia.

=^._.^=

[mloispro]

so, you are saying   free ammonia at 0.001 ppm is unsafe? according to seneye I can have 20 times that amount and be at a safe level.. If you are referring to NH4 that is listed in ppb..