Sorry about the delay in getting back to this thread. It gets kind of hectic following over 20 different bird forums, writing new articles and working on a book, running the bird business, and running the business that pays the mortgage!
Nate:
Normal "full spectrum" lighting that is designed for vision should be run 8-10 hours per day, coinciding with regular daylight hours. After all, the purpose is to add to vision and general health. Half a day of quality lighting does not make much sense, does it?
The problems emerge when using lamps with skewed spectrums such as high UVB sources for reptiles, less than 93CRI, or high kelvin lamps. The imbalances of red, green, or blue can overstimulate or suppress the hormonal and general metabolism--as can exposure to quality balanced sources in excess of 12 hours per day. Going over 10 hours per day can be useful in stimulating breeding--but is something that should be only be done by an experienced breeder.
~J~ and Gary:
It is doubtful that we will be able to offer wholesale or case prices any time in the foreseeable future. There have been many inquiries--and getting into pet shops would increase our market penetration, but it is a matter of economics.
Unlike the regular Philips TL90 line, ours are produced in limited batches. The TL90 is made in daily batches of 50,000 as an automated process. Ours are made in off-production runs of a minimum of 500. There is a setup fee, and formulation fee--plus the cost of shipping and import duties from the Netherlands.
Once here, there is the cost of applying the dichroic filtering material, shielding, plus testing. Yes, every lamp is tested. Add to that facility overhead and insurance and it's easy to see that we are not able to market them the same as a mass produced lamp. The truth be told we are nearly eliminating our profit margin by offering coupon discounts...
HyacinthLove:
Choosing quality lighting is one of the best possible things you can do to next to diet to improve overall quality of life issues for healthy, happy birds. It has always amazed me that owners will spend hundreds to thousands on buying their birds, hundreds to thousands on cages, hundreds annually on toys, food, and supplies, hundreds annually on vet visits--and then balk at a the cost of providing quality lighting--often choosing the cheapest and most inappropriate devices, if any.
For placing a light above the play area, consider the possibility of relocating it somehow so that you can suspend lighting. It sounds like yours is a case of needing to think creatively!