What is a Fish Room? Definition and Scale of Professional Breeding Facilities
A Fish Room is a room or facility designed specifically for the professional breeding and rearing of tropical fish. When stepping up from a hobby to a side or full-time breeding operation, the design of an efficient fish room significantly influences productivity.
Typical Fish Room Scales:
| Level | Tank Count | Area | Characteristics |
|---|
| Beginner | 10–20 tanks | 130–260 sq ft | 1–2 tier steel racks, compatible with standard household power |
| Mid-Scale | 30–60 tanks | 260–520 sq ft | Dedicated stands, central filtration system, 200V power recommended |
| Professional | 60+ tanks | 520+ sq ft | Central piping, automatic water changes, greenhouse or full air conditioning |
This article focuses on beginner to mid-scale designs and covers all essential elements needed for startup operations.
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Tank Stand and Rack System Selection and Design
Using Steel Racks (Metal Racks)
For beginner to mid-scale fish rooms, steel shelving (metal racks) offers the best cost-to-performance ratio.
Recommended Specifications:
- Width: 90–120 cm (fits two 60 cm tanks side by side)
- Load capacity: 200 kg or more per shelf (a 60 cm tank with water and substrate weighs approximately 80–90 kg)
- Tiers: 3–4 levels (top tier can be used for LED lighting mounting space)
Storage Capacity per Tier by Tank Size (120 cm Wide Rack):
- 30 cm tanks: 3–4 tanks
- 45 cm tanks: 2 tanks
- 60 cm tanks: 2 tanks
Wooden and Angle-Iron Custom Stands
For serious breeding facilities, welded square tube stands or H-beam angle stands excel in durability and safety. DIY is possible, but adequate strength calculations accounting for water weight (1 L = 1 kg) are essential.
Design Points:
- Direct floor anchoring (prevents tipping and earthquake protection)
- Slight floor slope for easy drainage (approximately 2–3 mm/m)
- Maintain at least 60 cm of space between racks as a work passage
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Piping System: Central Filtration and Drainage Design
Central Filtration System
Central filtration, where multiple tanks are managed by a single filtration system, significantly improves management efficiency.
Basic Configuration:
1. Sump Tank (Service Tank): A large 100–500 L tank housing all filter media (biological and mechanical filtration)
2. Main Pump: Distributes water to each tank (flow rate: total tank volume × 5–10 turnovers per hour)
3. Supply Lines to Each Tank: Ring piping using polyethylene (PE) or PVC (VP) tubing
4. Overflow and Drain Lines: Excess water from each tank drains by gravity back to the sump
Benefits of Central Systems:
- Centralized water changes and filter media management
- Uniform water quality (reduced variation in individual tank parameters)
- Risk of medication addition (note that fish in one tank can affect the entire system)
Individual vs. Central Filtration: Selection Criteria
| Method | Benefits | Drawbacks | Recommended Scale |
|---|
| Individual Filtration | Easy isolation and disease management | High maintenance costs | Up to 20 tanks |
| Central Filtration | Efficient and cost-effective | Risk of disease spread | 30+ tanks |
In practice, combining breeding tanks (individual management) + rearing tanks (central management) is most practical.
Drainage and Water Change System
Drainage equipment that streamlines regular water changes directly impacts productivity.
Basic Equipment:
- Install drain valves at the bottom or side of each tank
- Connect drain lines to a floor drain or drainage bucket
- Install hose connection ports (ball valve + hose connector) on each rack for water supply
Semi-Automated Water Change System:
- Timed solenoid valves for periodic drainage
- Auto-refill via float valve (dechlorinated tap water or filtered water)
- Breeders can save significant time by automating weekly water changes
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Electrical System Design: Capacity Calculation and Safety Measures
Power Consumption Calculation
Understanding power consumption of tank equipment is essential for avoiding household breaker overload and managing costs.
Estimated Power Consumption of Major Equipment:
| Equipment | Per 60 cm Tank | Notes |
|---|
| Heater | 100–150W | Varies greatly with temperature differential and insulation |
| LED Light | 20–60W | Varies significantly by product |
| External Filter | 10–30W | Varies with flow rate and water pressure |
| Air Pump | 3–20W | Depends on usage |
| Submersible Filter | 5–15W | |
Estimated for 20 × 60 cm Tanks:
- Heaters × 20: 3,000W (winter)
- Filters × 20: 400W
- Lights × 20: 600W
- Air pumps, etc.: 300W
- Total: Approximately 4,300W
Breaker Capacity and Circuit Design
A standard household single-phase 100V, 20A circuit provides maximum 2,000W. The 20-tank setup above requires 2–3 or more circuits.
Recommendations:
- Install a dedicated breaker panel (subpanel) for tanks
- Separate heater, lighting, and pump systems into independent circuits
- For larger setups (50+ tanks), consider 200V power supply
Safety Measures:
- Use waterproof outlets and drip-proof receptacles
- Provide drip loops (arc downward cable routing to prevent water ingress)
- Use extension cords or outlets with GFI/GFCI (ground fault circuit interrupter) protection
- Concentrate electrical systems on walls or upper areas, positioned away from water spray
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Temperature and Humidity Management: Fish Room Environmental Control
Temperature Management
Most tropical fish require optimal water temperatures of 25–28°C, and as room temperature drops, tank heater power consumption increases sharply.
Effective Temperature Management Strategies:
- Maintain room temperature at 20–25°C (reduces heater electricity costs)
- Apply insulation (styrofoam, etc.) to exterior walls and floors
- Winter: Use portable heaters or air conditioning for room temperature control
- Summer: Use aquarium coolers or air conditioning to prevent water temperature rise
Humidity Management
Fish rooms tend to become very humid (60–90%) from evaporation, leading to mold and wood decay.
Countermeasures:
- Install exhaust fans (24-hour ventilation recommended)
- Use glass covers on tanks to reduce evaporation
- Dehumidifiers (especially during rainy season and summer)
- Protect walls and ceiling with waterproof paint or moisture barrier boards
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Workflow Design: Essential Layout Principles for Work Efficiency
Basic Principles
- Main passage (90 cm+): Maintain clear space to walk while carrying buckets
- Work area (bench): Consolidate water acclimation, netting, and medication bathing work in one location
- Tool and medication storage: Keep near the work area
- Minimize water supply/drain lines: Keep all tanks within hose reach
Tank Placement Priorities
- Breeding pair tanks: Place at eye level (80–100 cm from floor) for frequent observation
- Rearing tanks: Place on upper tiers of multi-level racks for bulk management
- Isolation/treatment tanks: Place near entrance in separate area (prevents disease spread)
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Summary: Planned Design Determines Long-Term Productivity
Since fish rooms are difficult to modify once installed, thoroughly considering electricity, piping, and workflow at the initial design stage is crucial.
A design that starts small and scales gradually (steel racks + individual filters → add central system later) is a realistic approach that minimizes initial investment while allowing flexible growth. An efficient fish room significantly enhances breeder productivity and breeding success rates, providing the foundation for developing sales activities on br-choku into a stable business.
