How much of an influence are old bulbs on causing nuisance algae growth?

[cato]

How much of an influence are old bulbs on causing nuisance algae growth?

 

[OnTheReef]

The older the bulb, the more the spectrum shifts towards reds and yellows. If your bulbs are older than 18 months, you might as well intentionally put nitrates in the tank to feed your algae and be done.

 

[marine_freak]

Check out Sonjay Joshi's web site he can answer all your lighting questions and has many articles...... www.reeflightinginfo.arvixe.com