CO_Q1_TLE – Aquaculture 7/8_ Module 5 Technology and Livelihood Education AQUACULTURE Quarter 1 – Module 5: Draw and Layout Tanks (Exploratory Course) 7/8
TLE Aquaculture – Grade 7/8 (Exploratory Course) Alternative Delivery Mode Quarter 1 – Module 5: Draw and Layout Tanks First Edition, 2020 Republic Act 8293, section 176 states that: No copyright shall subsist in any work of the Government of the Philippines. However, prior approval of the government agency or office wherein the work is created shall be necessary for exploitation of such work for profit. Such agency or office may, among other things, impose as a condition the payment of royalties. Borrowed materials (i.e., songs, stories, poems, pictures, photos, brand names, trademarks, etc.) included in this module are owned by their respective copyright holders. Every effort has been exerted to locate and seek permission to use these materials from their respective copyright owners. The publisher and authors do not represent nor claim ownership over them. Published by the Department of Education Secretary: Leonor Magtolis Briones Undersecretary: Diosdado M. San Antonio Development Team of the Module Writer: EDERLEAH MARIE S. NOVIO Editor: PINKY G. TANAP Reviewers: MARIO DONIO, EDWARD RYAN F. GULAM Illustrator: ASCER P. ABELLON JR. Layout Artists: GERALD V. LAUGLAUG, MAYLENE F. GRIGANA, MARJORIE P. GABUMPA Management Team: ALLAN G. FARNAZO, GILBERT BARRERA, ARTURO TINGSON, JR., PETER VAN ANG-UG, DONNA S. PANES, ELIZABETH G. TORRES,JUDITH B. ALBA Printed in the Philippines by Department of Education – SOCCSKSARGEN Region Office Address: Regional Center, Brgy. Carpenter Hill, City of Koronadal Telefax: (083) 2288825/ (083) 2281893 E-mail Address: [email protected]
7/8 Technology and Livelihood Education AQUACULTURE Quarter 1 – Module 5: Draw and Layout Tanks (Exploratory Course)
Introductory Message This Self-Learning Module (SLM) is prepared so that you, our dear learners, can continue your studies and learn while at home. Activities, questions, directions, exercises, and discussions are carefully stated for you to understand each lesson. Each SLM is composed of different parts. Each part shall guide you step-bystep as you discover and understand the lesson prepared for you. Pre-tests are provided to measure your prior knowledge on lessons in each SLM. This will tell you if you need to proceed on completing this module or if you need to ask your facilitator or your teacher’s assistance for better understanding of the lesson. At the end of each module, you need to answer the post-test to selfcheck your learning. Answer keys are provided for each activity and test. We trust that you will be honest in using these. In addition to the material in the main text, Notes to the Teacher are also provided to our facilitators and parents for strategies and reminders on how they can best help you on your home-based learning. Please use this module with care. Do not put unnecessary marks on any part of this SLM. Use a separate sheet of paper in answering the exercises and tests. And read the instructions carefully before performing each task. If you have any questions in using this SLM or any difficulty in answering the tasks in this module, do not hesitate to consult your teacher or facilitator. Thank you.
1 CO_Q1_ TLE – Aquaculture 7/8_ Module 5 What I Need to Know This module covers the knowledge, skills and aptitude required in drawing a lay-out plan for tanks. After going through this module, you are expected to: 1. identify different kinds of tanks; 2. identify different life support systems for tanks; 3. draw lay-out of different tank designs according to established standard procedures. What I Know Let us know how much you have learned with your previous module. Please answer the following. Choose and encircle the letter of the correct answer. 1. How to remedy a tank with low dissolved oxygen? a. Start the blower c. Start the paddle wheel b. Start the water pump d. Start the electric fan beside the tank 2. ________ are small aquatic organisms raised in tanks which are commonly used as the first food of young fin fishes? a. Larvae c. Rotifers b. Phytoplanktons d. Microalgae 3. What is the term used to indicate a large container of liquid usually used in culturing fish? a. reservoir c. basin b. tank d. fishpond 4. Why is it necessary to design the tanks in the hatchery? a. To have a beautiful tanks b. To create a beautiful arrangement of tanks. c. To have a uniform size and shape of tanks d. To conform with the characteristics of the target specie of fish
2 CO_Q1_ TLE – Aquaculture 7/8_ Module 5 5. What is the first phase of a fish production system? a. construction of aquaculture facilities b. hatchery c. nursery d. grow-out 6. Separating suspended solids from water such as silts, debris and foreign organisms can be done by the use of ______. a. fine mesh screen c. filtration units b. secchi disk d. intake structure 7. Early stage of the fish life cycle? a. egg c. larvae or fry b. fingerling d. post fingerling 8. The sand filter tank is set up with how many layers of different filter media? a. 2 c. 5 b. 4 d. 3 9. In a milkfish broodstock tank, what is the design? a. Triangular c. Square b. Rectangular d. circular 10.Where are newly hatched fish eggs placed? a. Hatchery tank c. Nursery tank b. Broodstock tank d Grow -out tank
2 CO_Q1_ TLE – Aquaculture 7/8_ Module 5 Lesson 3 Draw Lay-out Plans for Tanks What’s In Let’s try to recall your previous lesson. Answer the following questions: 1. What are the different compartments of a pond? 2. To draw a lay-out plan for ponds, what is the basic procedure to be done in order to represent the actual measurement of the said layout? 3. What are the following fishpond facilities that control the water of the pond system? What’s New If you plan to invest or venture into fish farming, what is one of the things that you must consider? Maybe you think of the relation of the natural resources and its location where you reside. In this lesson, you will be directed into another way of developing aquaculture facilities which may be best fit to your locality. What is It Fish Tank Layout and Design Tank is a large container of liquids, rectangular, square or circular in shape usually used in culturing fish.
3 CO_Q1_ TLE – Aquaculture 7/8_ Module 5 HATCHERY TANK DESIGN Hatchery is a place where fish eggs, larvae, and /or fish fry are produced under artificial conditions for later release to its natural habitat or for human consumption. In terms of production, this is where the first phase takes place. Followed by nursery to be placed on nursery tank and finally, to grow-out phase to be cultured in ponds, pens, tanks or cages where fishes are grown to marketable size. The hatchery tanks should be made to provide easy operation and free from work hazards. The design and layout should have room for further expansion with enough space left for the future tank construction, water and air supply system, etc. Fig. 1 Rectangular tank Figure 2 Basic layout for a small- scale hatchery with 2 larval tanks, 1 sand filter, 3 rotifer tanks in the indoor section, a pump house and 3 microalgae tanks in the outdoor section. Source: Image from the journeytothephilippines.wordpress.com Pump Larval / Fry tank Sand filter Larval / Fry tank Rotifer tanks
4 CO_Q1_ TLE – Aquaculture 7/8_ Module 5 Source: Image from www.aquatrain.org Source: CBLM, Fish Culture NC II, 3rd Year, Module II. Pages 11-19. Type of tanks in small- scale hatchery with 1 meter deep are: Sand filter tank – composed of layers of different filter media. Water passes through a filter medium, commonly sand and out to the bottom of the tank. Figure 3 Sand filter tank Source: CBLM, Fish Culture NC II, 3rd Year, Module II. Pages 11-19. Larval rearing tank – about 6 m3 capacity. It must be devised for rapid and complete draining. Figure 4 Larval Rearing Tank Source: Dynamic Team Aqua Ventures Inc. Malapatan, Glan, Sarangani Province Live food production tanks. These are used for microalgae production and are usually located outside hatchery tanks . Small fiber-glass tank (1 to 2 m3 capacity), for rotifer enrichment Seawater outlet Sand Gravel Large stones Seawater intake Figure 6. Small fiber-glass tank Figure 6. Live food production tank Source: Image from www.fao.org
5 CO_Q1_ TLE – Aquaculture 7/8_ Module 5 Designing Tanks for Culturing Fish Tanks can be designed in various ways. These can be made of concrete in rectangular or square, hexagonal or octagonal or may be a circular one. Tanks for grow out are typically 4-10 m in diameter, and 1-3 m deep. Figure 7 Rectangular Tanks Figure 8 Drain Hole Source: CBLM, Fish Culture NC II, 3rd Year, Module II. Pages 11-19. Figure 9 Outlet Hole Figure 10 Drainage Canal Source: CBLM, Fish Culture NC II, 3rd Year, Module II. Pages 11-19. The concrete rectangular tank drain hole fitted with 3 inches PVC pipe is located at the rear end of the tank (figure 7). The tank floor should have a slight slope towards the drain hole which is 5 degrees to 15 degrees for easy draining, cleaning and for maintaining purposes. While the outlet hole (figure 9) is used for draining water from the tank through the drainage canal (figure 10) that passes out from the tank site.
6 CO_Q1_ TLE – Aquaculture 7/8_ Module 5 Figure 11. The circular fish tanks Source: Dynamic Team Aqua Ventures Inc. Malapatan, Glan, Sarangani Province Figure 12. The cross section of a circular or hexagonal fishtank Source: CBLM, Fish Culture NC II, 3rd Year, Module II. Pages 11-19. The outlet must be placed in the middle of the tank. The tank bottom should have a slight slope towards the center where the outlet is built. Life Support Units A. Sea water supply systems includes: Intake structure – used to pull water from the sea using electric motor with 746 watts and 1 hp Filtration unit – used to separate suspended solids from the water, e.g .fine silts, debris and foreign organisms Water pump – made of cast iron, stainless steels, fiber glass or plastic to prevent corrosion. It should be self- priming. Water pump reservoir –holds a ready source of water in any case thereof. B. Fresh water supply system Standby water pump and accessories to be used in drawing water from a well or other sources in case natural water supply is a problem; and Air supply system. Blower is essential to supply high volume of air at low pressure in the hatchery. At least one blower with 1-2 hp capacity is needed although 2 units are better.
7 CO_Q1_ TLE – Aquaculture 7/8_ Module 5 Figure 13 Water Pump Figure 14 Blower Figure 15 Tanks with Aerators What’s More Classify the types of tanks.
8 CO_Q1_ TLE – Aquaculture 7/8_ Module 5 What I Have Learned Instructions: In a half size illustration board or chipboard make a diorama of a lay-out in a small-scale hatchery tank. What I Can Do Instructions: Make a brochure of different tank life support units. Use a cut-out or a print-out of pictures of each with a clear description of it. Assessment Identify each picture and classify accordingly. A. 1. __________________________ 2. __________________________ B. Label each picture accordingly. 3 4. 5. C. Explain briefly. Why are tank life support units important in culturing fish?
9 CO_Q1_ TLE – Aquaculture 7/8_ Module 5 Additional Activities Design a basic layout for a small- scale hatchery with 2 larval tanks, 1 sand filter, 3 rotifer tanks in the indoor section, a pump house and 3 microalgae tanks at the outdoor section.
10 CO_Q1_ TLE – Aquaculture 7/8_ Module 5 What’s More Out Tanks - Grow Hatchery Tanks Rectangular/square Sand filter tank circular rearing tank - Larval hexagonal/octagonal production Live food tank Answer Key What I Know A C A D B C C D D C What I Have Learned Check the output of the students. What I Can Do Check the output of the students. Assessment 2. Circular tank 1. Rectangular tank 3. Live food production tank 4. water pump larval rearing tank 5. C. Answers may vary.
11 CO_Q1_ TLE – Aquaculture 7/8_ Module 5 References Castanos M.T. SEAFDEC Asian Aquaculture [email protected] Patadjai R.S. Article from SEAFDEC Asian Aquaculture Sim S.Y., Rimmer M.A., Toledo J.D., Sugama, S.,Rumengan I., Williams, K.C.. Philips, M.J. 2005. A Guide to Small-Scale Marine Finfish Hatchery Technology Toledo C.F. Breeding and Hatchery Management CBLM, Fish Culture NC II, 3rd Year, Module II. Pages 11-19. http://www.fao.org
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