ok i have never bought any coral before. i have a 55 gallon that i want to upgrade later. what i was wondering is if i had an extra 29, could i start any coral at all with regular powerglow bulbs. the people at my lf say sure. but they also told me that perculas can change from sex to sex, i know they change from male to female but from what i have read once they are female they stay that way. so im not real impressed with the knowledge at my lf. is there any type of leathers i could grow with power glow bulbs? i would just like to have some coral for when i start a new tank. ill have pc lights on the new one but dont want to buy a pc for the samll tank. maybe i cant have any corals at all untill i get better lights but thats why im hear asking.