12-14-2010, 12:30 PM
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i use two t5 bulbs and i still get tons of BGA. BGA is caused by excess organics, type of light is still just light, there are t8 bulbs of the correct spectrum as t5. t5 bulbs just have a stronger output and, IMO more likely to cause excess algae than t8 bulbs.
What im interested in is your fixture, did you buy your light fixture second hand or separate from the tank? T5 fixtures are considered high tech, my new one that i just ordered was 120 dollars for a 2 bulb fixture. Tanks u buy in stores that have hoods are all t8 except for the eclipse series.