I'm using On The Go OTG4-DBL soft portable 16,000 grain RV water softener. I just love it. Bought this for our winter stay in an RV Park in Florida. The water here is very hard so thought this would be worth a try. Well,, installed it and what a difference.
Our water hardness was 180 and is still at zero (0) after three weeks of use. There are the two of us in our motor home where we shower, do dishes and use as much water as we want to and the soap, shampoo and dish detergent lathers up like crazy!
So very happy with this purchase. The advert said it should be around 40 days before there is a need to regenerate and this one is well on to that time frame before needing to do it.