i have a 48" Aqueon Freshwater T5 light with 2 28watt bulbs. One is a colormax and the other a 6,700K. The replacement bulbs run about $20 to $25 at local fish stores. Online i have found T5 replacement bulbs that are 54watt HO (high output) for around $10 per bulb with free shipping. I was wondering if these bulbs will light and last in my fixture. or should i just buy the 28 watt bulbs at my local fish store.