BHT has been said, and proven to work on herpes and help with other diseases. I also would like to know why there is no information in the article for BHT as a cure for many diseases. BHT is a suspected mutagen and carcinogen.
I used to be able to pour the concrete and set the poles by the end of the day, but I don't think the bagged cement available now days will do it. Lately, I pour the foundation, then set the poles in about three of four days, depending on the rain, the more the better.
The length of time to keep your lights will depend on the type of aquarium you have running. For a freshwater tank with just fish there really is no set time. Anywhere from 1-12 hours per day will be fine. If the tank is in an area where it gets lots of indirect sunlight or simply is a bright room you can keep the lights on for less time.