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John said:
You get about 5-7 pennies and a straw, put these aside.

Get a clear jar, scoop 2 tablespoons of salt into it. One tablespoon of baking soda.

Now the first important ingredient should be in the bathroom cleaning supplies. Ammonia (any brand). Pour it in until the jar is 2/3 the way full (as tall as you want the crystals to grow)

The last ingredient is laundry bleach (careful not to spill on your clothes!), fill the rest of the jar.

Now drop the pennies into the bottom, and quickly take the straw and blow bubbles onto the pennies to get the crystals  going. You should be able to see stringy crystals after about 30 seconds of blowing. That's it!

The pic below took about 10mins of steady blowing.

The pink and purple some from the production of copper-calciphate using the CO2 in your own
breath. Blowing until you're dizzy actually increases the CO2 in your breath, giving the
crystals more vibrant colors.

Enjoy your crystals!!!

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He would actually kill someone just for a couple of laughs.