Fish Favorites: Decorations Your Aquatic Friends Will Love

Hey folks, Hank here! As an avid DIYer, I’m always looking for fun new projects to take on around the house. Lately, I’ve gotten really into aquarium-keeping and decorating fish tanks. There’s something so relaxing about creating a little underwater world.

As any fishkeeper knows, aquarium decor serves an essential purpose beyond just looking pretty. The right decorations can make your fish feel right at home, reducing stress and promoting healthy behaviors. An underwater oasis doesn’t have to be complicated or expensive, either. With some creativity, you can craft custom decorations that are both fish-safe and budget-friendly!

In this post, I’ll walk you through everything you need to know about choosing and making aquarium decorations that your fish will love. Let’s dive right in!

Why Aquarium Decor Matters for Fish Health

Most fish sold in pet stores come from rivers, lakes, or coral reefs, not sterile glass boxes. Recreating elements of their natural habitat makes for happier, healthier pets. Here are some of the top benefits of a well-decorated tank:

  • Reduces Stress: An aquarium crammed with hiding spots and plants helps timid fish feel secure and lowers aggressive behavior. A few caves can give territorial fish a space to call their own.
  • Supports Natural Behaviors: Driftwood, rocks, and other decor let fish exhibit behaviors like exploring, hiding, and foraging for food. This enrichment keeps them active and engaged.
  • Improves Water Quality: Live plants act as natural bio-filters, absorbing fish waste and releasing oxygen into the water. Specific substrates also promote healthy bacterial growth.
  • Prevents Boredom: A stimulating environment wards off boredom-related behaviors like repetitive glass surfing or tail nipping. Novelty items pique curiosity, too.

For the healthiest fish with the most personality, prioritize tank decor! Now let’s go over some do’s and don’ts.

What decorations do fish like

Aquarium Decoration Safety Tips

When it comes to DIY, safety should always come first. Follow these guidelines when selecting materials and making your decor:

  • Avoid Toxins: Stick to non-toxic paints and adhesives approved for aquarium use. Metals or finishes like lead or zinc are a no-go. Unsealed terracotta or miniatures with chemical paints can leach into the water over time.
  • Sand Edges: Fully round or sand any rough edges on homemade decor to prevent injuries. Acrylic, MDF board, and plastics like PVC and ABS pipe are softer materials that are easy to modify.
  • Test Stability: Ensure decorations are stable and won’t easily tip over and crush fish. Heavy materials like rocks and driftwood work well. Use aquarium-safe silicone to anchor lighter objects.
  • Cure Properly: Allow paint, sealants, adhesives, etc., to fully cure out of water for at least 24 hours before adding decor to a tank. This prevents the leaching of harmful chemicals into the water.
  • No Loose Parts: Avoid decor with small removable parts that could trap or choke fish if dislodged. Go for one solid piece or permanently affix pieces together.
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With the correct planning and materials, you can create any safe theme or look for fish and their aquatic environment. Now, let’s explore some popular decoration options.

Top Types of Aquarium Decor

There are tons of possibilities when it comes to aquarium decorations. Mixing natural, artificial, and DIY elements creates a dynamic habitat. Here are some of my favorite decor options:

Plants for Cover and Foraging

Live plants naturally filter toxins and provide shelter and foraging opportunities. Some easy, low-light beginner species include:

  • Anubias
  • Java Fern
  • Amazon Sword
  • Java Moss
  • Marimo Moss Balls

If live plants seem intimidating, silk plants are a great low-maintenance alternative. Go for soft, pliable leaves without sharp wire stems.

Select the Perfect Decorations for Your Fish Tank

Rocks and Driftwood for Territorial Markers

Territorial fish appreciate rock formations and driftwood to separate their space. Boil, scrub, and soak natural wood and rocks before adding to disinfect and waterlog them.

Stack slab rocks or position a sizeable gnarled branch to create caves and overhangs to explore. Using 2-3 large statement pieces keeps the environment open.

Substrate for Digging and Foraging

Substrate refers to the material covering the tank bottom. Consider grain size, texture, and color. Popular options include:

  • Gravel: A classic choice, use smooth aquarium gravel around 3-5mm for safety. Opt for larger grains in heavily planted tanks.
  • Sand: Fine-grained sand between 0.5-2mm lets fish sift and dig while still being too large to be swallowed. It may require more frequent vacuuming.
  • Marbles or Pebbles: For a unique look, polished glass marbles or natural pebbles around 1-2 inches add interest. Avoid sharp natural stones.
  • Bare Bottom: An empty glass bottom simplifies cleaning for fish that don’t need substrate, like bettas or goldfish.

DIY Hideaways and Caves

It’s surprisingly simple to make aquarium-safe hideaways using materials like:

  • Terracotta pots: Affix an overturned pot to the tank floor using aquarium silicone. Add holes if used in a paludarium.
  • PVC pipe: Use aquarium-safe silicone to join elbows and tee joints into tunnels. The cap ends with rubber stoppers.
  • Slate or stones: Stack flat stones into a cave formation with silicone. Use round stones and mastic for a natural look.
  • Wood: Adhere stacked craft wood squares together with silicone. Carve out internal chambers with a Dremel for complex hideouts!

Caves make shy fish feel sheltered, allowing bottom-dwellers like plecos to rest hidden. Plus, you can get creative with shapes and colors!

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Decorations for aquarium

Designing Theme Tank Décor

Beyond general fish preferences, think about decor that fits your specific tank inhabitants. Here are some great themes to get you started:

Lush Jungle Vibes for Tropical Fish

Transport tropical favorites like guppies, tetras, or gouramis to the rainforest with:

  • Broad-leaf plants like Amazon swords or anubias
  • Tangled driftwood emerging from the water
  • Dim, forest-like lighting from floating and aquatic plants
  • A dark gravel or soil substrate to mimic the rainforest floor

Riverbed Feel for Cold Water Species

Hardy goldfish and mountain minnows hail from fast-flowing streams. Recreate their habitat with:

  • Smooth stones and pebbles scattered on the tank floor
  • Twisted driftwood, mopani wood, or slate rock formations
  • Hardy plants like anacharis, java fern, and Vallisneria
  • Cool-colored lighting to mimic the shaded forest floor

Under the Sea for Saltwater Fish

Make salty favorites like clownfish or tangs feel at home with the following:

  • Branching coral decor, live or preserved coral skeletons
  • Textured rocks stacked into mini-mountains as a background
  • Fine white sand mimicking the sea floor
  • Blue lighting simulating the ocean depths

You can recreate almost any natural habitat with a bit of creativity. Focus on what your fish would experience in the wild.

Balancing Form and Function

A stunning aquascape isn’t much use if it isn’t livable. When designing your decor, consider both aesthetics and practical elements that support fish health:

Filter-Friendly Decor

Specific decorations actively improve water quality. Incorporate items like:

  • Filter media like bio-balls or mesh bags of activated carbon to absorb impurities
  • Fast-growing live plants that uptake excess nitrates and phosphates
  • Powerheads or air stones circulate water and prevent stagnant pockets
  • Tannin-rich botanicals like driftwood or almond leaves that fight algae and fungus
Choose safe decorations that wont affect water quality

Lighting for Viewing

Proper lighting keeps plants and fish looking their best. Here are some aquarium lighting tips:

  • Full spectrum: Choose full spectrum bulbs that support plant growth and enhance fish coloration.
  • Plant-specific: Use plant-optimized blue and red LEDs for heavily planted tanks to spur growth.
  • Timer compatible: Invest in a programmable timer to simulate natural day/night cycles with sunrise and sunset effects.
  • Night lights: Add a separate low-watt moonlight bulb for viewing nocturnal fish after lights out.

Your aquatic plants and fish will truly pop with the right mix of light!

Budget-Friendly DIY Decor Ideas

You don’t need to spend a fortune on premium tank decorations. Many of my favorite projects use simple household items creatively repurposed for aquarium use:

  • Cut sections of 2-liter soda bottles make perfect tiny caves for nano tanks. Use aquarium silicone to adhere to gravel as “camouflage.”
  • Adhere glass gems or marbles to basic terracotta pots using aquarium silicone to add a pop of color. Bury in the substrate to create hidden tunnels.
  • Use a Dremel tool to carve out the inside of sizeable unfinished wood chunks from craft stores to make DIY shelters and overhangs.
  • Glue smooth aquarium rocks onto plastic craft mesh sheets to create textured 3D background dividers for partitioning tanks.
  • Affix moss to basic cholla wood shapes secured to a slate to create a natural-looking mini-tree or forest canopy.
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With a trip to a craft or home improvement store, you can make many custom decorations on a budget!

Designing Theme Tank Decor

Design Techniques for a Professional Look

With fundamental design skills, anyone can create an aquascape worthy of a magazine cover. Use these techniques for stunning results:

The Rule of Thirds

Visually divide the tank into thirds horizontally and vertically. Position key decor pieces where the lines intersect for balanced composition and plant groupings.

Create Layers

Build visual depth by placing decorations in the tank at varying heights and depths. Tall plants go in the back, short in front. Stack rocks and wood.

Limit Colors

Stick to 2-4 complementary colors for gravel, plants, rocks, etc. Bold pops of color can work as accents. Too many clashes appear chaotic.

Direct Lines

Use decor to create lines that direct the eye through the tank, like a path of stones or a branch pointing to a focal point. Avoid crisscrossing lines.

Planning out decor placement using basic design principles elevates any tank from so-so to spectacular!

Maintaining Your Tank Décor

No aquascape lasts forever. Perform regular maintenance to keep your decor looking its best:

  • Trim plants: Prune back overgrown plants so they don’t block light from reaching the bottom of the tank.
  • Remove algae: Wipe green spot algae and gently scrub black beard algae from leaves and decor before it takes over.
  • Clean substrate: Use a gravel vacuum to remove debris like leftover food, plant matter, and fish waste from the substrate during water changes.
  • Rearrange items: Rotate decor items and rearrange them seasonally to keep the environment novel and engaging.
  • Replace aging decor: Switch out fading fake plants and crumbling rocks or wood before they compromise water quality.
Maintaining Your Tank Decor

With routine care, your perfectly decorated habitat will stay beautiful and healthy for fish and plants. A well-kept tank is a relaxing sight!

Time to Craft Your Aquatic Oasis

As you can see, aquascaping offers plenty of possibilities for devoted fishkeepers and crafty DIYers alike. The next time you peer into your tank, consider what simple changes could make that world more habitable for your fishy friends.

With some planning and imagination, you can create a beautifully decorated underwater sanctuary that reduces fish stress, encourages natural behaviors, and looks incredibly inviting from outside the glass. Your new hobby may turn you into a decor addict like me, constantly dreaming up new themes and finding creative ways to implement them affordably.