Originally Posted by
fau8
http:///forum/post/3028888
This is going to start a debate, but imho I would not do without one. I am using a coral life 36watt and have found it to be beneficial. There are a number of things to be aware of:
They do not keep your tank ick free, they will just help control the out break.
The most important thing about UV sterilizers is flow rate through the unit too fast and your unit will not be effective.
Reefers will tell you that they kill all your pods etc. This is true if they pass through the unit, but the majority of these creatures live inside your live rock and will not be free swiming through your unit. This is is my opinion, but this will probally be the item that stirs the gratest debate. Even though I have a setilizer I have been able to maintian a healthy pod population within my tank.
You need to replace the bulb annually.
You can increase the buld life by running the unit 6-12 hours a day. I however do run mine 24/7.
All great points here.
I like the Corallife UV units as well. For a 90, you will be able to get away with a 9watt, but if you have the extra cash, go with the 18watt.