I have searched for information on dosing Plantex CSM+B, but I couldn't find much. I mixed it usind the instructions on www.gregwatson.com, but I don't really know how much to add to my tank. The solution is 1 tablespoon of Plantex CSM+B and 1 tablespoon of Magnesium Sulfate in 1/2 litre of water. The tank I need to add it too is a heavily planted 20 gallon long with high light, co2, and I'm already dosing N-P-K. I just need to know about how much and how often for dosing the Plantex solution.