Romain, I want to encourage you, too, just as Bartian and Patrick did! You seem to be very sensitive as water conditions are concerned, and I think you could try species like P. linkei or P. filamentosus; they are not as fastidious than many others. I should not recommend the undescribed spec. Sentang as the first Paro although it presently might be that variety which is most easily to be found in some pet shops. It is a variety of P. bintan and that needs more exacting care. The two I mentioned are better.
Do you need addresses of breeders in France (I guess you are from France, is that right? Which town?). If you need addresses, please write to our distribution-service (see the button “distribution”).
By the way, we have some very young members, and they are doing very well!
Good luck, Peter