Coral deaths unlikely due to nitrates

[Snappy]

I have been thinking that nitrates may be playing a smaller part in my tanks' RTN / bleaching equation after all. I hadn't even thought about a leak that we had from our dishwasher that had been dripping through the floor right into my reef. Along with the soapy water, we had just renovated so there was fairly fresh grout, tile set, glue, of course the wood underneath it and then it was soaking up whatever chemicals are in the basement ceiling tiles before dripping straight into my tank. A few weeks ago I was puttering around my tank when I saw water dripping into the tank off my light fixture, this immediately got my attention. I did some investigating and discovered the DW was leaking. I asked me wife about it and apparently she had played "handyman" a few weeks earlier when I was out of town with work and had created a leak we were unaware of and she had been running the DW as usual. Being away I hadn't noticed the problem until this had been going on for several weeks. I think this might be my real problem. Any thoughts?