A finished planted cube aquarium with a bright green carpet growing from a row of Modular Planted Floor modules and red stem plants behind

The Modular Planted Floor system

Algae happens. Lifting it out takes a minute.

Every plant sits in its own lift-out module. When algae shows up, a plant melts, or you simply want a change, you take that one piece to the sink, rinse it, and put it back. Nothing else in the tank moves.

Start with the free kit Why tanks fail
  • Free starter files
  • 9 footprints, 3 depths
  • Lifts out in seconds

The three reasons beginners quit

A planted tank rarely dies all at once.

It fails in three quiet steps. If you have set one up, watched it turn green, and felt like you did everything wrong, you did not. The floor was working against you the whole time.

Failure 01Algae

The green takes over.

Waste and excess nutrients settle into stagnant, packed substrate, and light does the rest. Within weeks the glass, rocks and leaves are coated, and scrubbing only buys a few days.

Failure 02Melt

Plants root badly, then rot.

Loose substrate shifts, roots never anchor, and the airless pockets underneath quietly turn sour. The plants you paid for melt into the water column instead of filling in.

Failure 03The teardown

One rescape and you are done.

Fixing any of it means uprooting everything: a muddy, exhausting teardown that spikes your parameters and clouds the water. It is the moment most beginners decide fishkeeping is not for them.

Every one of these ends the same way: pull everything out and start again. Unless the floor comes out in pieces.

The whole system, in one move

Lift it out. Rinse it. Put it back.

There is no separate cure for algae, for a melted plant, or for a layout you have grown tired of. There is one move, and it answers all three.

Two hands holding a single Modular Planted Floor module with dense red and green plants growing out of it, lifted clear of the tank

Step 01

Lift

Slide one module out. The plants, the roots and the substrate all come with it, held together in one piece. The rest of your aquascape does not know anything happened.

A hand holding a Modular Planted Floor module beside a planted aquarium while trimming with tweezers

Step 02

Rinse

Clean it at the sink. Trim it, replant it, or swap it for another. The algae leaves with the module instead of being scrubbed across the whole tank.

A row of Modular Planted Floor modules seated on the aquarium floor with a dense green carpet grown over them

Step 03

Return

Drop it back into place. The floor closes up, the carpet grows back over the seams, and the scape looks the way it did before, minus the problem.

And if it ever gets really bad? Lift them all. A complete reset, without uprooting a single plant.

A densely planted aquarium on a lit rack in the One Fish Tank fish room
One Fish Tank fish room, Queens, New York

What actually changes

You stop being afraid of your own tank.

That is the real difference. Not that algae never appears, because it does, in every tank, including these. It is that algae stops being a disaster and becomes a two-minute job. Once a problem is that easy to undo, you stop hesitating. You try the hard plants. You rescape when you feel like it. You keep going, which is the only thing that ever made anyone good at this.

Start with the free kit

Setting it up

A planted floor in an afternoon.

Three empty Modular Planted Floor modules in different footprints showing the internal planting cells

Step 01

Choose your modules

Pick the footprints and depths that fit your tank, from Small 70 by 70 mm up to Jumbo 210 by 210 mm, in three heights.

Modular Planted Floor modules seated together forming a continuous planted floor

Step 02

Place and fill

Arrange them across the floor and fill each pocket with the substrate you already prefer. They sit flush, so the seams disappear as plants grow in.

A finished planted cube aquarium with a dense green carpet and red stem plants

Step 03

Plant and grow

Plant straight into each pocket. From here on, every problem and every change is handled the same way: lift, rinse, return.

Start today

Print your own, or buy the library.

Every product here is live right now. Start free, then take the full set whenever you are ready.

Start here

Free Starter Kit

Nine module files across three footprints and all three heights, plus a PDF layout template. The no risk way to try the system.

Free
Get the free files

Before you ask

Questions, answered.

Does this stop algae?

No, and be suspicious of anything that claims it does. Algae turns up in every planted tank, including ours. What changes is what it costs you. Instead of a weekend teardown, you lift out the affected module, rinse it in the sink, and put it back. The problem leaves with the module rather than being scrubbed across your whole aquascape.

Do I have to lift out the whole floor?

Almost never. One module is usually all it takes, because problems tend to start in one area. But if a tank really gets away from you, you can lift every module out, clean them all, and set them back down. That is a full reset without uprooting a single plant.

Do I need a 3D printer?

For the digital products, yes, or access to a print service. The files are print ready STL. Printed, ready to plant kits are in small batch production and are not on sale yet. Start with the free kit to see whether the system suits your tank.

What tank sizes does it fit?

Nine footprints, from Small 70 by 70 mm to Jumbo 210 by 210 mm, in three heights. They arrange to fit most common aquariums, and the interactive planner in the Design Lab lets you lay out your exact inside dimensions before you buy.

Which substrate can I use?

Your own. The module contains whatever aquasoil, sand or gravel you already prefer, which is the point. You are not locked into a proprietary medium.

Will lifting a module disturb my fish?

Far less than a normal rescape. You are removing one contained piece rather than digging through the substrate bed, so very little clouds the water and your parameters stay stable. Move slowly and give the tank an hour to settle, the same as any maintenance.