Hey, I picked out a couple rocks from our yard that i want to stick in my tank, I'm worried that perhaps some grass fertlizer has been on these rocks from time to time. So i rinsed them off, and have them soaking in a bleach solution, 8 cups of water, and a cup of clorox rain clear bleach. I just want to make sure this won't have any neggative affects on my fish. Also, once they're done in the solution, should i just give them a good rinse and they'll be ready?