Freshly harvested and bottled to order - this phytoplankton algae has been cultured for invertebrate culture at ZM. Invertebrates fed on live algae will have a higher natural HUFA content and therefore increase their nutritional value to fry. To maintain and develop this culture you need to set aside an area with a warm stable temperature, aeration for the culture vessels, 1-2 plant bulbs rigged approx. 200mm to the side of the culture vessels, and a timer providing 12-14 hours of light per day. It is important to avoid culture contamination from nearby fish tanks as any rotifers accidentally transferred will start consuming your algae. Aim to set up 3-6 separate cultures in case a culture crashes and aim for approx 3-4 times the volume of algae to invertebrate cultures being reared. The new 2.5 litre quantities are listed as 'advance order only' to be sure the quantity and quality of stock is available; these volumes are normally in stock just let us know what you need.