Most reef hobbyists test their water on a regular basis; after all keeping a reef in tip-top shape requires monitoring your water parameters. Years ago, hobbyists might test their water and either right it down or forget about the test result if the result is what they wanted. The problem with that though is you don’t have history to go back and find out what happened when your tank unexpectedly crashes. Aquatic Log is a new service that allows you to keep track of each of your water parameters, equipment and other misc values. This might be compared to an online diary of your tank—separate from an aquarium controller but it might look similar to what Seneye provides with their online reporting interface. The service is free to signup, with a premium edition giving you access to additional features.