Haha, I don't think that flow or light are the issue.
The last tank they were in had 35watts of halide/gallon and over 40x's turnover. These are zoos, not sps.
If anything I believe that some zoos do better in a "dirty" aka nutrient rich tank. Moderate light and flow seem to get better results JME. IF they ever do grow enough to frag I will definitley give you a call.
Cheers,
- Chad