I believe you'd need more light on a deep tank like a 90. Carey on this forum has it over a 40 and seems to grow softies and lps well but no results for sps/clams/nems. I'd get two 120 watt dimmable eBay leds if you want to keep anything you want.
20 Gallon SPS reef
29 Gallon FW "fat catfish" tank
20 Gallon Long Dart Frogs "Zig" and "Zag"
Oh...corner tank. Gotcha. I'm thinking 48". The reef breeders and the one I posted a link to are basically the same. I bet they are the same manufacturer. The extra colors are just personal preference.