Fluval Kuhl All-in-One Nano Tank — Unboxing, Setup & Aquascape (Honest Review)

Henry spotted this one at a trade show and had to try it. The Fluval Kuhl all-in-one nano tank caught his eye for one reason: it's designed to grow terrestrial plants on the outside of the tank, not just aquatic plants inside — which fits perfectly with what the Nature Aquariums team does with paludariums and the Wet Roots · Dry Leaves section. In this video, Henry does a first-time unboxing, figures out the assembly live on camera, aquascapes the tank from scratch, and gives you an honest review of what he likes and what he thinks could be better.

What Is the Fluval Kuhl?

The Fluval Kuhl is a small all-in-one glass aquarium designed for shrimp, nano fish, and planted setups. What sets it apart from a standard nano tank:

• Side planting baskets — external terracotta-ball-filled pods for growing terrestrial plants outside the water
• Sump-style back filtration — two chambers in the back for filter media, increasing water volume and biological filtration capacity
• Flexible LED light — adjustable arm with dual brightness settings and a separate power supply so you can run it on a timer
• USB pump with included brick — a small detail, but Fluval includes the power adapter (many budget brands don't)
• Stainless steel intake pipe with diffuser — cleaner look than plastic, and it works
• Available in white and black

Unboxing — What's Inside

The tank ships with quite a few small parts and the instructions aren't the clearest — even Henry, who sets up tanks professionally, had to study the box photos to figure out where everything goes. Here's what you get:

• Glass tank body (not plastic — a nice touch; possibly low iron)
• Back sump filtration chambers with filter cartridge slots
• Stainless steel intake pipe and diffuser
• Short and long intake grills (which one you use depends on your setup — see below)
• Internal planting basket (optional — for keeping plants contained in sand/gravel setups)
• Side planting baskets with expanded clay balls
• Water level indicator
• Flexible LED light with dual brightness and adjustable arm
• USB pump and power brick
• Filter cartridge guides (save these — they're reusable)

Assembly Tips — What Henry Learned the Hard Way

• Intake grill orientation matters — the grill needs to face down so it draws water in from the bottom, not the side. Easy to miss.
• Leave the pump fitting loose until you get the intake seated properly — then tighten.
• Short grill + internal planting basket go together — if you're using the internal basket for plants, use the short grill. If you're doing a full aquascape without the basket, use the long grill and skip the basket.
• The internal planting basket is optional — it lets you keep plants neat and contained in a sand or gravel setup. For a full aquascape, skip it.
• Water spout is adjustable — lower it to use the lid; raise it for open-top setups.
• Filter cartridge slots are flexible — Henry recommends pulling the stock ammonia cartridge and replacing with a bag of Sera Siporax or Matrix for real biological filtration. The slots fit standard poly fill cut to size as well.

Lighting — Know Its Limits

Henry tested the light with a PAR meter and got readings of around 15–26 PAR at the bottom of the tank. That puts this squarely in low-light territory. What that means for plant selection:

• Works well — Anubias, Java fern, Bucephalandra, Cryptocorynes
• Won't work — red stem plants, high-light foreground plants, most carpeting plants

The flexible arm lets you angle the light toward whichever plants need it most — useful when you're balancing light between aquatic plants inside and terrestrial plants growing in the side baskets. Henry notes that a second light point would make this tank significantly more versatile.

The Aquascape

Henry went with a low-light epiphyte build — no substrate-rooted plants, just hardscape with plants attached:

• Anubias on lava rock — already growing on rock, no gluing needed
• Java fern glued to the back of driftwood with cyanoacrylate (superglue) — always attach to the back of wood, not the front, for a cleaner look
• Bucephalandra added to the scape

One tip on cyanoacrylate glue: it turns white when it contacts water. If you're attaching plants to dark wood, plan your placement so the white glue spots will be hidden as the plants grow in.

Honest Review — What Henry Likes & What Could Be Better

What works:

• Elevated design looks great on a desk — bigger visual presence without a large footprint
• Side planting baskets are a genuinely unique feature and well executed
• Sump-style back chambers are smart — more water volume and real media space in a nano tank
• Stainless steel intake pipe looks and performs better than plastic alternatives
• Flexible light with separate timer-compatible power supply is a thoughtful design choice
• Good value for money overall

What could be better:

• Instructions are not clear — even an experienced aquarist will need to reference the box photos repeatedly
• Lighting is underpowered — a second light or higher output would open up a lot more plant options

What's Next for This Tank

The plan is a shrimp setup. The tank needs to go through a full fishless cycle first — Henry estimates about 3 weeks before it's ready for livestock. A follow-up video will cover how the tank looks once it's fully cycled and stocked.

Video Chapters

• 0:00 — Introduction: why Henry picked this tank up at a trade show
• 1:00 — Unboxing: what's in the box
• 3:00 — Hardware breakdown: expanded clay balls, sump chambers, stainless pipe
• 5:00 — Light overview: flexible arm, dual brightness, separate power supply
• 7:00 — Assembly walkthrough: intake grill orientation, pump fitting, water spout
• 10:00 — Internal planting basket explained: when to use it and when to skip it
• 12:00 — Filter cartridge slots: stock media vs. custom biomedia options
• 14:00 — PAR test results: light output and what plants will work
• 15:00 — Plant selection for the aquascape
• 16:00 — Aquascaping: Anubias, Java fern, Bucephalandra, cyanoacrylate tips
• 20:00 — Final setup: biomedia, water level, side baskets planted
• 22:00 — Honest review: likes, critiques, and final verdict

Bottom Line

The Fluval Kuhl all-in-one nano tank is a genuinely interesting product. The side planting baskets and sump-style filtration set it apart from the dozens of generic nano tanks on the market. It's not perfect — the instructions need work and the light could be stronger — but for a shrimp tank, a low-light planted desk setup, or a beginner paludarium, it punches above its weight. Henry gives it a thumbs up.

Interested in setting up a nano tank, paludarium, or planted aquascape? Visit us at natureaquariums.com or stop by the store in Lauderhill — we'd love to help you build something cool.