Originally Posted by massi186

Speaking about UV sterilizer, I have used it for some time but I had some problems with Iron content in my tank. No matter how much iron you add, the sterilizer will make your iron content in the tank zero. My experience is with the UV sterilizer is positive for quality of water (cristal clear). Didn't notice a decrease in algae growth. Very good for fish tanks in preventing various bacterial sicknessess. In a planted acquarium I wouldn' use it. Waste of money. Most of my plants had problems showing lack of nutrients. Hygrophila showed a severe lack of Potassium (holes on leaves). I don't know the reasons of all this but my experience is this.
Bottom line: I think I have wasted money. I would like to know what Tom thinks about this topic.

P.S. This is my first post on this forum. I am Italian. Forgive my English if it's not perfect.