Okay Coralife's warranty only covers the fixture for a year so unfortunately I got the unit in 2010 so there's help there.
I want to get the Aquaticlife T5 HO duel fixture but I'm curious would that be low,med, or high light for a 20 gallon long tank? and why is the 30" one out of stock in almost every website?(I guess it's really popular)
I checked out the Odyssea and unfortunately it does not come in 30".