Cathie

Don't know where to start. I think your nice spider may be a spider mite (it is really almost invisible?) and may have a few friends. They will kill your tree if you allow them to stay there and need to be dealt with (they're not real spiders). Your tree should live outdoors year round, depending on where you live (where please?) as it was never meant to live indoors like a house plant. You could have it closer to the lights without a problem. Fungicide is intended to cure sick plants, not make them worse, and from the sound of your raffia, you may have rotted roots (junipers need sandy, gritty, non-peaty soil that's allowed to dry to some extent between waterings). Blight affects things like fruit tree orchards, not little juniper bonsai, at least not the first thing you should be worried about. Anything you cut/pruned will be stressful to the tree at this time, as it's programmed to be going dormant, not to respond to pruning with new growth. What's an unnecessary splice? BTW, just for the record, vivacious is what a cute bubbly energetic young girl is, not a juniper :-)!