Review on AQUA CREST Compatible Fluoride Arsenic by Brandon Fernandez

I used these filters in addition to the candle filters in my Big Berkey. The only real problem I have with this is that if you follow the instructions and only screw them in 8 full turns, the filters become very wobbly. To counteract this, I put a couple of stainless steel discs between the filters. (First I boiled them and soaked them in apple cider vinegar). That was just enough. I don't have a real test device, but the taste of the filtered water has definitely changed. I would recommend them to other people.