I'm having a bitch of a time getting this to clear. I added sparkolloid according to the directions (1 tbsp boiled with 1 cup water for 5 minutes - added to carboy and stirred gently), but it only cleared the top 10cm or so. That part was crystal clear, but the rest was really murky. I tried cold-crashing for a few days, but had no luck.
Yesterday, I went to Wine Kitz and got some kieselsol and chitosan. I added the kieselsol last night, and I'll add the chitosan tonight. I hope this works, because it's getting pretty frustrating.