If you have the patience you should allow your wine to age before bottling. This way the remaining yeasts (if any) will die off of atrition, your wine will taste better, tartaric acid may/will fall out and your creation will aspire to something you will really appreciate.
If you do decide to bottle soon, hide a bottle away for a year and taste the difference.
Sparkolloid is basically dynamaceous earth, clay. Nothing harmful.