If you could name a couple of Items that were the biggest help you've found here, what would they be? Jot down one or two, perhaps another if it comes to you later.
For me it's pretty easy, but it wasn't Chemistry so much as it was with Equipment. When we built, we were going with a pressure cleaner until Duraleigh encouraged me to look hard at substituting a top of the line Robot instead. Even having been here a while, I hadn't dug too deeply into this subject and I honestly wasn't sure how they could be so great. The more I looked into it, the more I got interested and warmed up to the idea, especially considering the elimination of an additional pump from the equation. This is what we did, and simply traded the cost of the PC system for the robot, which turned out to be within $50 of the original plan. No Brainer on a Pool Build....
As it turns out, I still think this was the single biggest/best decision we made on the entire build. Not just for the build cost/decision but long term this has made things so much easier. With the dust and leaf debris we get, it's paid for itself already without a doubt. I don't want to even think about what a chore our pool would be without one. Had I built without coming to TFP, I might have a very different outlook on every day pool care.
Although smaller, another tip I picked up here is skimmer socks. Having seen what they do, I won't run without em' if I can help it at all.
So, what comes to mind for you having to name some things?