Energy Balancing in Pine Bonsai (How to Prune Scots Pine candles in spring)

To avoid your bonsai pine growing into a tree, pruning is needed. In spring it is important to work on your pines and reduce pine candles in order to balance the energy in the bonsai canopy.
How to do this and when, in this video about pruning pinus sylvestris, Scots pine, bonsai in spring. How does energy balancing in bonsai work, why prune candles, how to prune candles and how to keep your pine developing well by thinning the number of candles on a pine in spring.