Just got my new Coralife 4x65 today for my 55 gal tank...Would my tank be considered high light now? I did have 4 32w T8s...A couple more questions...Should one add iron to a tank that is showing no defciences? How important is calcium to plants? My water has a gh of 0, I have been adding epsom salts but havent added any calcium. What are some calcium deficences? If I add 1/2 tsp of Kno3 3 times a week should I dose any K2So4? Sorry for all the questions in one post....