How to Make an Algae Test Photo Bioreactor...Part One




Introduction: How to Make an Algae Test Photo Bioreactor...Part One

This gives a step-by-step instructions on making an algae test photo bioreactor. This can be used in any application that calls for testing and/or growing algae, to determine maximum growth rates, best nutrients, etc., such as...

Making algae biodiesel,
Animal feed,
Organic fertilizer,
Health food supplements and many more.

Because this is more involved than can be explained clearly in a single instructable, I'll have to include multiple parts.

You can download a complete free eBook here:

It includes a complete parts list, color diagrams, step-by-step instructions, and full color photos.

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Step 1: Building the Base

Materials needed:

17 Plant (saucer) caddy (Home improvement store $17.99)
(10) 2 PVC "repair" couplings (Home improvement store $1.65 a piece)
(2) 28 x 48 x plexi-glass (Home improvement store $6.97 a piece)
(2) 2x4 steel brackets (Home improvement store $0.96 a piece)
Aquarium sealant (Home improvement store $3.98)
Wood screws and washers

Tools Needed:

Power drill
Jig saw
Hack saw
Straight edge

Step 2: Base Assembly 2

Take out the plastic insert in the plant caddy and set aside. Place the plant caddy upside down on the Plexi-glass panel

Step 3: Base Assembly 3

Draw a circle on the INSIDE edge of the plant caddy.

Step 4: Base Assembly 4

Take the jigsaw and cut along the circumference of the circle. You may want to cut along the inside of your pencil mark to make sure your wood panel fits into the plant caddy easily.

Step 5: Base Assembly 5

Take the round piece you just cut and gently tap into the plant caddy.

Step 6: Base Assembly 6

Using your straight edge, mark a straight line down the center. The line across, creating quarter pieces. Mark the exact center with a dot.

Step 7: Base Assembly 7

Set your tie rails on the center and draw an outline around each.

Using wood screws and washers, anchor the tie rails in place. Be sure to pre-drill the screw hole or the plexi-glass may crack

Step 8: Base Assembly 8

Evenly place 10 of the coupling around the outer edge of the plant caddy, 5 to each side. Leave 3.5 inches space on each side of the metal tie rails.

Step 9: Base Assembly 9

With the marker, draw outlines around each fitting.

Step 10: Base Assembly 10

Carefully draw 2 Lines next to each other going from opening to opening on the 2 inch PVC coupling.

Step 11: Base Assembly 11

Using a vice, and a hack saw carefully saw through both lines with a hacksaw.

Step 12: Base Assembly 12

Using the aquarium sealant spread a bead around the bottom edge of the coupler.

Step 13: Base Assembly 14

Glue the couplers onto the spots previously marked with the cut edges facing AWAY from the edge of the plant caddy.

The base is completed.

You can download a complete free eBook here:

Step 14:

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    4 Discussions


    7 years ago on Step 14


    I cannot get the book downloaded.....




    8 years ago on Introduction

    Hi ,
    Can any one help me out in some calculation work its really very urgent , please help me out ..... i need to consume 1932.3kg/hr of CO2 with the help of Algae in a pond (water) for example Raceway pond , so i need to know the specific area to construct that pond and its sizing and dimension (length,etc) and the quantity of water needed and amount of algae used so that it easily consumes the mentioned amount of CO2 rate per hour..... please help me out soon you can also drop your suggestion and questions if any my email id is : ....i will be waiting for your reply soon and i'll be highly thankful to you, if someone can help please do tell me its very urgent....

    Thank you


    Reply 8 years ago on Introduction

    did you ever get any responses fro anyone? if so I would most certainly be interested in the info or anything you have learned in achieving your goal.