im a first time grower too so ive never used the duel spectrum but less you in real small area why not go for the 400w i got mine on ebay for like $130 bucks with blub balast reflector timer and hangers free shipping just something to think about and its a digi balast that runs mh/hps think that would be cheaper than the duel spectrum bulbs hear they cost alot for those bulbs alone gl man and happy growingIts my first grow and im growing two autoflowering plants is a 125w dual spectrum light good for my plants???