I don't know what is ceramic bulbsDo you know how MANY different mh bukbs have come and gone??
How many different reflectors are history?
Product Review: Spectral Analysis of 400 Watt Mogul Metal Halide Lamps: Ushio 14000K, Icecap 400W Series, Elios 10000K
This article presents the last of the 400W mogul lamps tested.reefs.com
Every spectrum is a change .
How many ballasts no longer exist?
The History of Marine Aquarium Lighting (Part 1) | Aquarium Concepts
www.aquariumconcepts.net
Now how about the new ceramic metal halides..
BTW nobody " needs" to upgrade every year.