Hi, I have a large 300 gallon mixed reef aquarium, with the following parameters: temp between 76-78, pH between 7.88 and 8.01, and alk around 9.1. I just did some service to my sump, and I noticed that two hose clamps I had attached to my return pump, which are about 2 years old, were covered in rust. I was wondering if anyone had any literature on any possible connection between rust and possible harmful effects on LPS, or even some first hand experience. I only ask because I have been having some issue with euphyllia polyp bailout (mostly hammer corals) for about a year now, and I have no idea what could be causing it, besides possibly these two rusted hose clamps which I have just taken out of my tank.