I have a 30" Aquatic Life Light T5 HO 4-Lamp 2-Lunar for sale. The 420/460 switch is not working, I believe it needs a new ballast. The lights on the other switch work fine, as do the lunar lights. About a year ago, I replaced the Lunar lights with AquaticLife LED replacements which are much better than the stock LED’‘s it had. I’‘d like to get a $150 obo. I’‘m sure the ballast is easy to replace, I found it on Amazon for about $38.00, I just don’'t have the time or want to do it. I also have some used bulbs. Whoever takes it will need to get new bulbs, but the ones I have could get you started. Here is the fixture: http://www.aquaticlife.com/light-fixtures/four-lamp-t5-ho