i just wanted to let everyone know that there are more podcasts out there for you to learn from. check out the link in my signature. there are about 85 topics here, everything from intro to saltwater - how metal halides work for our hobby. great for beginners and the more advanced hobbists. if the signature doesn't work check this site out www.talkingreef.com - if this is against any rules, i apologize in advance. just trying to help some fellow reefers out with some great info.