I've had times an aquarium years ago. Since I had ever such a Oxydator where I was very pleased. After a period of 15 years, I've gone back to the aquarium. Mir initial difficulties regarding water quality I am back to the oxidizer recalls. Searched the internet and found at Amazon. If you ask the pet store then it is only succinctly: one does not need and also brings nothing. I beg to differ because I bez. Water quality, fish and plants rarely had a problem and now have. I recommend it to anyone aquarists recommend beginners. I have the Mini in a 200 liter tank. According indication he would be too small, but if you look worried from the pharmacy hydrogen Perroxyd and himself on 4% down Mixes it is more effective than the remedies provided. Since then suffices only 1 Katsalysator of the 2s are doing. The refilling is daber shorter. then runs approximately 14 days with a filling
