The new addition/replacement in the garden is the extractor. As mentioned, I don't think the TD-500 will handle both lights while maintaining the current climate. The RVK is the new recruit. I tried to obtain a bracket for it but my local didn't have one in stock. Instead I've chained it up. Its a bit noisy in its current configuration, but I hope to obtain some rigid ducting and scrap as much flexy as possible. The spigot plate hole took ages as i didn't have a jigsaw to hand, so i drilled millions of holes.. enjoy the attempted photoshopped pic of the new big hole and closed sliding door way.