CSI Real Blood Experiment

Okay, so I was watching this CSI: NY episode a couple of days ago. I totally forgot what it was called. As a matter of fact, I even forgot what the damn case was. But one thing struck me as odd. The episode opened up with some guy holding his toothbrush into the stream from the faucet. He's not looking and doesn't notice how the water that's coming out of the faucet is blood red. Scene cuts to a guy in the shower being covered with red. Cut to body floating in the water tank on the roof.

Now that struck me as odd. I doubted that a body would manage to tint the entire amount of water blood red like that. Pink tinge maybe, yeah, but not red like normal blood. So I did some mathing. Or rather, I let Tom do the math LOL. Anyway, judged by the size of the tank in relation to the actors, the water level etc. we estimated the amount of water in the tank to be around 25,000 liters (cutting short on the math here). If we assume the average body has 7 liters of blood (even though it'd be odd to think that the body would bleed out completely, let's just think it did) it would break down to about 1 ml of blood on 3.5 liters of water. Why I broke it down to that much?

So I could do this!

( Caution, images featuring 1 ml of blood and a needle going into an (my) arm )