Re: should I change lamps or not? Don't relamp until the meter tells you to, that is the benefit of using a meter. If you want to be aggressive with your lamp changes you can wait till it drops 20% in output instead of the normal 30 which would be a reading on 14.8 on your meter. I think these are 100 watt lamps which means they are in your level 1 beds so you don't need the lamps to be that strong as you want your clients to upgrade to your stronger beds. I would leave them until it drops 30% since they are your level 1's and your stronger beds relamp at 20 or 25 percent. __________________ |