Bests & Worsts Reviews from Amazon

I have the 15,000 gallon version for over a month without a problem. The manual calls for < 3000 ppm salt. If your water is to the max and you add enough salt based on your pool to hit 3500 ppm, you will be way over if you have any water evaporate. I use a TDS meter to test my Salt PPM level. With a full pool, I won't go over 2600 ppm because if it drops 10%, it will be way over 3000. There is something everyone needs to know about this system, it measures salt based on the current the system draws. There is a limited power supply and the more salt you add to the pool, the more demand you will put on the power supply. When the power supply voltage is drops below a specific voltage, you will receive a high salt error. If your extension cord isn't large enough to handle your pump + 2 amps for this unit, you will also receive this error. 3000 ppm should be considered a max at your lowest pool level. In Florida, 18' 48" pool, 6500 gallons and a 1/3 hp sand filter, I can easily keep the Chlorine level at 5 running this unit for 6 hours running the pool between 1900 - 2500 ppm salt. Using less salt means your run time will need to be adjusted according to the salt difference. The unit runs cooler and parts last longer. I have no scaling on the plates and the unit runs cooler. The only thing I do not like about this unit is the unit resets and requires manual power on any time the power blips. UPDATE 9/2/2018: This unit is still going strong and my pool is crystal clear. I am still running the pool at 2500-2600 ppm when the pool is full. I have since discovered that if you allow the salt to drop below 2000ppm, it can damage the plates. With as much rain as I have had here in Florida, I had to keep an eye on the salt level. As of today, All levels are where they need to be and I now only chlorinate 2 hours a day. I created my own controller using a ORP sensor using a Raspberry PI to monitor how this unit is working. Since I got a handle on the salt concentrations, PH (very important), Alkalinity (hand in hand with PH) and upgraded to a larger sand filter, I have had no issues with Green and only shock the pool maybe once a month. The cell in this unit is now 4 months old and after a close inspection, shows a little wear compared to a brand new cell but it doesn't seem nearly as bad as some of the reviews I've seen here. I believe this cell will last a couple more seasons easily. Current draw is still the same as it was when I bought it.