IAPLC Prep Week 1: Tank Selection & Hardscape Layout

Welcome to Week 1 of our IAPLC 2026 preparation series! With the contest application period opening April 1st, this is the perfect time to start planning your entry. This week, we're focusing on the foundation of every great aquascape: tank selection and hardscape layout.

Choosing the Right Tank Size

Your tank size should match your concept and experience level. Here's what to consider:

60cm Tanks (60P)

• Best for: Detailed, intimate layouts with intricate plant work
• Advantages: Easier to maintain, lower cost, perfect for first-time entrants
• Challenges: Less room for dramatic perspective

90cm Tanks (90P)

• Best for: Balanced layouts with strong depth perception
• Advantages: Most popular size among top 100 finalists, versatile
• Challenges: Requires more materials and maintenance

120cm+ Tanks

• Best for: Ambitious, expansive aquascapes with dramatic scale
• Advantages: Maximum creative freedom, impressive visual impact
• Challenges: High cost, demanding maintenance, photography complexity

Hardscape Layout Principles

Your hardscape creates the bones of your aquascape. Master these principles:

The Golden Ratio

Position your main focal point at approximately 1/3 from either the left or right edge of the tank. This creates natural visual balance that judges appreciate.

Sanzon Iwagumi (Three-Stone Principle)

For Iwagumi-style layouts:

• Oyaishi (Parent Stone): Largest stone, positioned off-center
• Fukuishi (Secondary Stone): Second largest, supports the parent
• Soeishi (Tertiary Stone): Balances the composition

Creating Depth

Use these techniques to create the illusion of depth:

• Place larger hardscape in foreground, smaller pieces in background
• Angle stones/wood to lead the eye toward the back
• Create elevation changes with substrate slopes
• Leave negative space strategically

Step-by-Step Hardscape Positioning

Step 1: Dry Layout
Arrange your hardscape WITHOUT water or substrate first. This allows unlimited adjustments.

Step 2: Photography Test
Take photos from the front viewing angle. This reveals balance issues invisible to the naked eye.

Step 3: Rule of Odds
Use odd numbers of stones/wood pieces (3, 5, 7) for more natural, dynamic compositions.

Step 4: Substrate Contouring
Add substrate to support your hardscape and create slopes. Aim for 3-4" in back, 1-2" in front.

Step 5: Final Adjustments
Step back, evaluate from multiple angles, and refine until it feels right.

Common Hardscape Mistakes to Avoid

• Centering the focal point: Creates static, uninteresting compositions
• Symmetry: Nature is asymmetrical; avoid mirror-image layouts
• Overcrowding: Negative space is as important as filled space
• Flat layouts: Create elevation changes for visual interest
• Ignoring flow: Hardscape should guide the eye naturally through the scene

This Week's Action Items

1. Finalize your tank size selection
2. Sketch your layout concept (top view and front view)
3. Source premium hardscape materials
4. Practice dry layouts until you achieve the perfect composition
5. Take reference photos from the front viewing angle

Next week: We'll cover plant selection and placement strategies to bring your hardscape to life.

Shop our IAPLC Essentials Collection for ultra-clear tanks and premium hardscape materials.