Hi Guys, Here are the list of my plants in 120 Gallon -Val Spiralis -Amazon Sword -Dwarf Lilly -Sagitaria Subulata(Here and there totally 10) -Hydrocotile Verticilata -Cardamine Lyrata -Hydrophilia Stricta -Potomegaton Gayi -Echinodorus Chardifolius Substrate(Fluval Startum and Platinum Soil Mixed) Planning to put the top layer after three months with Ec0-Complete. Light (2*T5 Fluorescent Bulbs) will glow them in the early morning and in the evening totally upto 8hours a day! Currently using Fluorish excel twice a week(6 to 8ml ) for a week. Do I need CO2 Injection as most of my plants are doing good except my Val. I read they are sensitive to Excel. My plants are looking fine even without CO2 now and I could see roots and new leaves are emerging. Give me a Good shot on Fluorish TM as well. Note:I chose plants which doesn't need CO2 injection while purchasing them and I made my substrate and Light Strong enough to serve.