Today won't have a heavy crash because the consequences of the current split are negligible. The market will climb back up, all the up to mid october. That's when fear of the real crash will kick in, because that's when the bitcoin split will result in heavier debate and FUD surrounding the shortterm consequences. Make sure to have some money aside to invest because we'll see some great deals, I can image virtually every coin including BTC plummeting to 30-40% of its current value