Some of them are:  PhytōChrōm

or pooling of water above horizontally-situated filter pad material)

Fast delivery and excellent after-sale service will be offered

the amounts of vitamins required for a given species varies

and Potassium

RedoxIclean 250ml vitamina Some of them are: PhytōChrōmImmediately improves water quality in all manner of aquaria by enhancing the rate of particulate and dissolved organic material decomposition, enabling the constituents to be more effectively removed with protein skimming, activated carbon, and other means of biological and chemical filtration. Safe for use with all fishes, invertebrates, and plants. Particularly useful: in heavily stocked, heavily fed aquaria; during "hiccups" in water quality in