ro water filters

I have an RO water question. I have been using my home drinking water RO filter from GE. It doesnt put out lot of water, I know, But I dont need that much right now since Im only running a small Nano tank. Id rather not have to spend the money on a new RO/DI system if I dont have to. We have...

my ro system is 6 stage recently every filter has been changed & i still have 0.5 phosphate level & 0.02 nitrate level in fresh mix. so after scratching my head as iv asked for help on my ro system before & ended up arguing, people commenting without reading the original post correctly then...