Easy Green Dosage

Hello! I am a fairly new to keeping shrimp. I have had a group of 25 Red Cherry Shrimp for about a month in a 5 gallon low tech planted tank. The tank and shrimp are doing great. I have baby shrimp (some of the females came berried) with newly berries females. My moss, Java fern, and water Wisteria are doing well. I am trying to keep about 10 ppm nitrate by feeding and dosing Easy Green. It is hard! If I followed the suggested dosing schedule, it easts through all the Nitrate in 2 days. I have started dosing half doses every other day, but it is still hovering around 5 ppm. Should I dose even more Easy Green, increase feeding, or leave it alone? I have noticed my moss is looking better and better as I get the ppm up, but I worry about the shrimp. Feeding is about 4 Sera shrimp pellets every other day with occasional bonus feedings of blood worms and ground up fish flakes.