Cider will ferment out completely dry since it is primarily simple sugar. I would put off any acid additions until after fermentation is complete. Dry cider should have no residual sweetness. You can't judge the finished ciders acidity very well by sampling the unfermented apple juice.
Something is always fermenting
...."It's Bahl Hornin'"Primary:Brite Tank/Lagering:
Tart Cherry Cider, Belgian Tripel, AHA Summer Ale, Sonoma County Organic Cider, Maibock Bock, Ommegang Abbey Ale Clone, Belgian Golden Strong, Belgian Quad (Grand Reserve), Belgian Pale Ale, German Pils (split WLP830 & WLP838)Bottled:
Contentment (Trappist), Derangement (Belgian Dark Strong), Kranky (Kolsch v1.1), Wise One (Wit)On Deck:My Site: www.restlesscellars.com