[NAS]

Ok, let me ask you this... Is adding a bio-product going to hurt? is it expensive? is it harder on the system then a series of water changes.

All that aside, we are talking about a closed system containing 80 odd gallons. i challange you to create a complete bio-system from the ocean that is self sustaining. Simply put it will not happen. I have a lot of money in my tanks. ALOT! by god i am going to do every thing to keep the wild animal alive. I know that the bio supplements are not "naturally occuring" but it's worth keeping my live stock going. Which I have for well over 6 years.

The really hard part about keeping aquariums is that every one has their own opinion. And that is great! They base it on their own experinces. The problem is when you jump ship to often from opinion to opinon. So, Find one that works for you, evaluate the risks, and stick to it. Change only if you have really looked at all the perspectives.