A bit O/T, but Lawndart, many of those who are just running stock air cooling on their eVGA 970 cards have found that they don't overclock nearly as well as many reviewers initially said with their test/demo cards. This is very common, and I have 2 Superclock ACX non ref coolers, and they don't o/c very well, either in SLI or singly.
Just wondering with the water cooling loop you're running if you're overclocking them, and what kind of numbers you can pull while doing so? I've always used a closed factory liquid cooling deal from Corsair or whatever for the CPU, but have never gotten into full water cooling for the entire system, but am thinking about it. Just like to know what it's doing for your GPUs, as I assume if you're going through the trouble/cost of a water loop, you're going to take some advantage of that by o/c'ing.