hi i am Massimo from italy, i have an 300lt discus aquarium with a lot of plants. Yestarday i have broken mi ada diffuser
so now i need do replaice it. My idea is do use an co2 reactor like the dupla reactor 400 with an dedicade small pump, how many litres pump i need and if is an good product or there is an better alternative. Thanks to all for the suggestions.