im not having live plants just the betta.. so ima use spring wateri guarentee thats tap water without chlorine... also id use your tap water with live plants they'll eat up that ammonia! 80% bottled to 20% tap would be good with live plants but be sure to get flourescent 5000-6000k bulbs! I use CFL screw ins on my smaller tanks and a tube bulb on my 30. all the ammonia id imagine would be like fertilizer. dont take my word though im not 100% on it