Rock garden serious issue serve!!?

I went to this: http://familyfun.step.com/arts-and-crafts/... and was making that. I put it within a big plastic jug. Mixed the hose with the alum, but not boiled hose, just really hot. Then I put my moms rocks within that I thought would work cuz it's too late to run outside for rocks. I bought them for her so she won't care...but anyway.
I put the rocks surrounded by the jug and go to look at it, and one of the rocks fancy coating came stale so i poured everything out, being the worrywart that i am. I get some water on my appendage and it tingles.
Cant tellmy mom she's asleep. My dad is too and if he's not he'll be mad.
do you reflect on that maybe im gonna seize hurt from this?
ps-im 13 idk what im doing.Rock garden serious issue serve!!?
If you didn't boil the water, you'll be fine. Also, any rocks' fancy coating is usually merely aluminum. Especially if they were cheap rocks that you bought for your mom. Don't verbs, you'll be fine!
I think you will be fine. Go rinse your hands really all right and let the hose down run over them.
Just wash your hand with soap and sea and tell mom within the morning.