What's your photo-period? What kind of lighting? I've found increasing CO2/ reducing light makes a difference, as does fine tuning EI depending on your plant mass instead of just on the size of the tank.
lighing: 2 36" Tek fixtures with 2x Giesemann Middays and 2x Flora bulbs
7 hours photo period. CO2 is up so high that i have to move them and the shrimp out.
my IE dosing is:
Monday: 1/2 tsp Plantex CSM+B, 1/4 tsp Mg (ei. MgS04-7H2O)
Tuesday: 1/2 KH2PO4, 1/2 CaNO3
Wednesday: 1/2 tsp Plantex CSM+B, 1/4 tsp Mg
Thursday: 1/2 KH2PO4, 1/2 CaNO3
Friday: 1/2 tsp Plantex CSM+B, 1/4 tsp Mg
Sunday: 50% WC, 1 tbsp GH Booster, 1 tsp baking soda, 1/2 KH2PO4, 1/2 CaNO3