Isochrysis Phytoplankton

Live Food



Isochrysis Phytoplankton

Isochrysis phytoplankton is used for DHA enrichment for rotifers & copepods. It is the most commonly used algae for oysters, clams, mussels, and scallops. Isochrysis is species of single-celled algae that help form the entire base of the natural food chain.

Isochrysis is a small golden/brown flagellate that is very commonly used in the aquaculture industry. It is high in DHA and often used to enrich zooplankton such as rotifers or Artemia. Isochrysis phytoplankton is a primary algae used in shellfish hatcheries and used in some shrimp hatcheries.

The Microscopic Plants (Phytoplankton) feed the microscopic animals (Zooplankton), produced in live rock which then feeds everything in the aquarium. Many often forget the need for phytoplankton, relying purely on a zooplankton diet.

Without a premium phytoplankton diet, the base of the food chain suffers, thus affecting everything in the system. Additionally, many clams, gorgonians & other coral filter out only Phytoplankton, thus zooplankton diets are useless for these particular animals.

Besides being a food source that generates the natural food for all tropic levels, Phytoplankton absorbs undesirable chemicals present in many reef aquariums, such as ammonia, nitrite, nitrates, phosphates, silicates, etc.

Our Isoschrysis Phytoplankton cannot be cultured as it is not a live product.

Phytoplankton Benefits

• Brighter coloured corals 

• Faster coral growth 

• Greater polyp extension

• Increased number of micro fauna

• Increased zooplankton and copepod populations

• Mysid populations will bloom due to the increase in copepods.

This product cannot be cultured. If you wish to culture our phytoplankton then please see our culture starter.

We Are Here To Help 

If you have any questions about our products or just need some advice, please get in touch via our contact us page as this is the quickest ways to reach us and for us to respond. We aim to respond to all messages before the end of the working day or the next working day if outside business hours. Check out our knowledge base for frequently asked questions. Check out what others are saying about our service here.

By Telephone 

Please feel free to call us - our number is 01633 927 377 or send a message using our TXT service from your mobile on 07520 633 313. Opening Hours 10am to 4pm, Monday to Friday.  We operate an answer phone while we are closed, but please feel free to leave us a message and we will return your call as soon as possible.

As a thank you to our customers for purchased from us, we have introduced our Reefphyto loyalty points scheme.  

What this means is that every time you make a purchase, you will be allocated 10 loyalty points for every £1 that you spend (excluding P&P) These will accumulate in your online account, which you can view at any time by logging in.

You MUST be logged into your account in order to earn Loyalty Points.  If you do not already have a Reefphyto account, please setup an account on our site before placing your first order.

















Please note the following Loyalty Membership conditions:

Occasionally there will be additional loyalty points allocated to purchases. 

These will be notified to you at the time of purchase, and also in promotional material sent to you, alerting you to the fact that there is a current or pending loyalty point promotion 

Only one discount code can be entered per order to be shipped. Multiple orders can be placed and discount codes applied but all orders to the same destination will be shipped separately.

Points cannot be redeemed for cash, unless against purchases. 

Loyalty points expire in 12 months.