Tropic Marin Nitribiotic is a combination of probiotic and nitrifying bacteria in one preparation which strengthens the defences of the immune system of fish and shrimps and improves the water quality. The nitrifying bacteria efficiently start the nitrification process, i.e. the process of breaking toxic ammonia down into non-toxic nitrate. The purple bacteria contained in Tropic Marin Nitribiotic oxidises toxic hydrogen sulphide to non-toxic sulphur and sulphate. Probiotic bacteria and yeasts have a proven positive effect on the health and well-being of fish and shrimps, especially when breeding.Tropic Marin Nitribiotic+ bacterial compound with probiotic, nitrifying and purple bacteria+ the addition of probiotic bacteria has a healthy effect and improves the stress resistance in the animals+ nitrifying bacteria assist the nitrification+ purple bacteria break down hydrogen sulphide+ suitable for any aquarium stock - fish, corals, LPS, SPS, other filter feeders and/or crustaceans+ easy-