How to Prep Driftwood and Rock for Your Aquarium: A Complete Hardscape Guide

The hardscape — your driftwood and stones — is the skeleton of any planted tank or aquascape. Get it right and everything else (plants, fish, lighting) just falls into place. Rush it and you'll be fighting cloudy water, tannin stains, floating wood, or a layout that never quite "clicks." This guide walks through every step: choosing wood and rock, prepping each safely, weighting floaters, attaching plants, and laying it all out like a pro.

Step 1: Choose Your Driftwood

Different woods bring different vibes. The most popular options we stock are:

Browse the full driftwood collection to compare pieces side by side.

Step 2: Soak or Boil — The Right Way

Almost every piece of natural wood will leach tannins (yellow/brown water) and may float when first added. Both are normal, both are fixable.

Soaking (passive method)

Submerge the wood in a bucket or tub of dechlorinated water. Use a water conditioner to remove chlorine. Change the water every 1–3 days. Small Malaysian pieces typically waterlog in 3–7 days; XL pieces can take 2–4 weeks. Cholla wood usually sinks within 24–48 hours.

Boiling (fast method)

Boil the wood for 1–2 hours per side in a large stockpot dedicated to aquarium use. Boiling sterilizes the surface, kills mold spores, and accelerates tannin release. After boiling, let the wood cool and inspect it for soft or fuzzy spots. Most pieces are ready to use within a day or two.

Pro tip: combine both

Boil for sterilization, then soak in fresh water for ongoing tannin removal. This combo is the fastest path to clear water.

Step 3: Dealing With Tannins (and When to Embrace Them)

Tannins lower pH slightly and tint water a tea color — many species (bettas, German rams, wild discus, shrimp) actively benefit from blackwater conditions. If you don't want the color, do regular water changes during the first 4–6 weeks and run fresh Seachem Purigen or activated carbon in your filter. Tannins fade naturally over time.

If you do want a blackwater look, supplement with botanicals like cholla wood and dried leaves to maintain the effect.

Step 4: Fixing Floating Wood

If your wood still floats after a week of soaking, you have options:

  • Weight it down. Tie stainless steel or ceramic weights to it with fishing line until waterlogged. Slate tile glued to the base also works.
  • Wedge it. Use heavy stones from the aquarium stone collection to pin it in place.
  • Screw it to a base. Stainless-steel screws into a slate plate buried in substrate keep wood permanently down without visible hardware.
  • Wait. Some dense woods (large Malaysian, mopani) eventually waterlog after 2–4 weeks of patience.

Step 5: Choose and Prep Your Rocks

Rocks aren't just decoration — they define the lines of your aquascape. The most popular options we carry:

See everything in the aquarium stone collection.

The vinegar test

Before any rock goes in your tank, do the vinegar test: drop a bit of white vinegar on a hidden area of the rock. If it fizzes, the rock contains calcium carbonate and will raise your pH and hardness. That's fine for African cichlids or hard-water livebearers, but bad for shrimp, discus, or soft-water tetras. The rocks we stock are tested aquarium-safe — but if you collect rocks from outdoors, always test first.

Cleaning rocks

Scrub with a stiff brush under hot tap water — never use soap. For stubborn dirt, soak in a 1:20 vinegar/water solution, then rinse thoroughly. Avoid bleach unless you're disinfecting after a disease outbreak (and rinse for 48+ hours afterward).

Step 6: Attaching Plants to Hardscape

Some of the best-looking tanks have plants growing directly on the wood and rock. Many of our aquarium plants are sold pre-attached to driftwood, so you skip this step entirely:

To attach plants yourself, use cyanoacrylate super glue gel (aquarium-safe brands are fine). Dab a small amount on the rhizome of an anubias, java fern, or bucephalandra, press it onto your wood or rock, and hold for 10–15 seconds. The glue cures instantly underwater. Cotton thread works too and dissolves after the roots grab on.

Never bury rhizomes — anubias, java fern, and buce will rot if their rhizome is in substrate. Glue them above the substrate line.

Step 7: Design Like a Pro

A great hardscape follows a few simple rules:

  • Rule of thirds. Place focal points (largest rock, tallest wood) one-third from the left or right — never dead center.
  • Odd numbers. Groups of 3, 5, or 7 stones look more natural than even groupings.
  • Create depth. Slope substrate from front (low) to back (high). Use smaller stones in the foreground, larger ones in back to fake distance.
  • One main wood piece. Multiple competing centerpieces fight for attention. Pick one hero and let everything else support it.
  • Leave open space. Empty foreground areas give your eye somewhere to rest and your fish somewhere to swim.

Before you fill the tank with water, take a photo from the front and from the side. Photos reveal flaws your eye misses in person.

Step 8: Tools That Make It Easier

You don't need much, but a few items help a lot:

  • Long aquascaping tweezers and scissors from the aquarium tools collection
  • Aquarium-safe super glue gel
  • A spray bottle to keep emersed plants and substrate moist during a dry-start
  • A turkey baster to puff away debris from crevices

Step 9: Putting It All Together

A typical hardscape-first build looks like this:

  1. Add a thin base layer of inert substrate or pumice for drainage.
  2. Lay your largest rocks and main wood first. Bury rocks slightly into the substrate so they look "grown in," not placed.
  3. Add supporting stones and smaller wood pieces, working from back to front.
  4. Top with the rest of your substrate, sloping back to front.
  5. Attach epiphytes (anubias, buce, java fern) to wood and rock.
  6. Plant carpet and stem plants in the substrate.
  7. Slowly fill with dechlorinated water — pour onto a plate or plastic bag to avoid disturbing the layout.

Troubleshooting

White fuzz on driftwood? Harmless biofilm — common in new tanks. Shrimp, otocinclus, and snails will eat it within 1–2 weeks. Don't scrub it off if it'll re-grow; just wait.

Wood still floats after a month? Drill a hole, drive in a stainless screw, mount to slate, bury slate in substrate.

Yellow water won't clear? Add fresh Purigen or carbon, and do 25% water changes weekly. Most tanks clear within 4–6 weeks.

Rocks looking dull? Algae growth and biofilm will mute them — that's a feature, not a bug. Aged hardscape looks more natural than brand-new stone.

FAQ

Do I have to boil driftwood? No — but boiling speeds tannin release and sterilizes the surface. If you have a piece too big to fit in a pot, soak instead and change water often.

Can I use rocks from a river or lake? Yes, if they pass the vinegar test and you scrub and boil them. But you risk introducing parasites or pesticides, so most aquarists prefer tested aquarium rock.

How long should hardscape soak before adding fish? Hardscape itself doesn't need a soak period before fish — but your tank still needs a full nitrogen cycle (4–6 weeks) before livestock goes in. Read our cycling guide for the full process.

Will driftwood lower my pH? Slightly — usually 0.2–0.5 over weeks. Most fish handle this fine; soft-water species love it.

Can I rearrange hardscape after the tank is established? Yes, but it'll disturb beneficial bacteria and stir up debris. Plan the layout carefully up front so you don't have to.

Ready to Build?

The right hardscape turns a glass box into a slice of nature. Browse our driftwood, stone, and plant collections, and pair it with one of our aquariums to start fresh. Need help choosing pieces that work together? Reach out — we'll help you pick a layout that fits your tank and your style.

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