Thanks for the replies! I'll try the best.
isurus 79, I watched your video on the PET-Method and potted allmost all my Catasetum that way this spring and they seem to like it a lot. I tried this method also with Cyrtopodium andersonii and another Cyrtopodium which I can't recall the name at the moment, and interestingly they are literally exploding and got their roots right down into the water reservoir. Only one Catasetum spec. Peru put its roots up into the air and then a slug ate the tips

It doesn't look good, not sure what to do with this guy, there are no roots going down into the Sphagnum.
@Keysguy: yes its a nice city. I got a house with garden in the upper hills a little outside of the city, where the weather is quite harsh. There is a large temperature difference compared to the city and specially the low temps are much more extreme. Great for cool growing species in summer, but winter temps occasionally go down to allmost -40°C (-40°F). I just spend the summer there and in winter I live with my girlfriend in her flat in the city because the house is not insulated. As my orchid collection expanded vastly last year and I just didn't have the room for all the plants in the greenhouse, I insulated one room of the house, wich I use as a warm/hot grow room with LED in winter and the orchids loved it. I'm now renovating and insulating the whole house and buidling a big sunroom for the plants (I only got a small greenhose - which is cramped - at the moment) to be able to spend the whole year there. But a little bit more of a warmer climate would be nice

Its basically only the three month of june, july and august that are for sure frostfree.