I use tree top apple juice (SG 1.045) and munich wheat beer yeast plus half can of apple juice concentrate. Let ferment at 20 c for 30 days then bottle, Has some carbonation and taste great.
As for my hydrometer, It's been sitting in the cubbert for 2 + years unused.
Noob here:Why do you need tannins in Cider, And have a go at using MUNICH WHEAT BEER DRY YEAST Takes 3-4 weeks to ferment out and I usually rack to secondary for 4 weeks.