I have raised fish for a number of years but am new to live plants. Can anyone explain what the different classifications of lighting is. Such as NO, HO,VHO, compact, t5, t8, I have a 55 gal with a t8 bulb and the plants seem to be doing good. One of the swords even has sent out a shoot with new plants starting on it. What is needed for a tank this size with fish in it.I thank you in advance