Light levels and developing pseudobulbs on cattleyas

[mossmac]

Hi there,

I was just wondering if cattleya orchids should be placed in slightly lower light levels when they have new pseudobulbs developing?

I ask this because the leaves on a new pseudobulb of one of my cattleya orchids are a very mottled purple colour and it looks like one leaf has a small area of 'sunburn' (a dried out, brown patch). The orchid is on a north facing window (in Australia). The window receives bright light, but not direct sunlight. The other older leaves on the orchid are all a uniform mid-green colour without any purple colouration.

As I am new to cattleya orchids and have not had my cattleya for very long, I would really appreciate any help/ advice.

Mossmac