I had a salt set up of around 2000g in total and I used a setup simular to vldesigns. It heated the water very efficiently. You do need to note the same issues vldesign had, make sure your pump is stainless or brass and you need a good quality check valve. I noticed no adverse effects to my hotwater heaters life and with the money saved in electrical charges I could have purchased 4 or 5 more hotwater heaters. I controlled my pump with my reefkeeper you do need to acount for some temp creep, as the hot water in the coil will continue to release its heat while in the coil. My creep was about 4 degrees f that was a little hard to figure out at the time but it worked out ok after a little trial and error nothing bad just not optimal temps. Obviously if you don't have natural gas to heat your hotwater this isn't going to save you money.



