All Products

Aquarium Colour Changing RGB Remote Control LED Strip Light

These economical yet powerful strip lights use high powered surface mounted LED lights. Control the ...

Nano Filter Replacement Layered Sponges GY-Mini Pack of 12

Replacement layered Sponges for mini aquarium single barrel air-driven bio sponge filters. The repla...

External CO2 Atomiser with Locking Bolt Seal – Ultra-Fine Ceramic Diffuser

The Castle Dawn Aquatics External CO2 Atomiser delivers a powerful and secure method of diffusing CO...

CO2 Splitter – 6-Way Needle Valve with FREE Extension Rod

The Castle Dawn Aquatics 6‑Way CO2 Splitter allows you to distribute CO2 from a single canister to u...

CO2 Regulator PRO Extension – Dual Manifold Block Add-On

Upgrade your CO2 Regulator with this manifold block extension, allowing you to run a second bubble c...

Castle Dawn Aquatics Breath Of The Wild Aquatic Plant CO2 Tablets

Weight: 100 Grams (100 Tabs). 1 Tab per 20 liters of water, twice a week for a heavily planted ...

Mini Ultra Quiet 3-in-1 Biochemical Sponge Filter Replacement Sponges Set of 10

Replacement layered Sponges for mini aquarium single barrel air-driven bio sponge filters. The repla...

Glass CO2 Drop Checker with 4dkh/PH Solution

The Castle Dawn Aquatics CO2 Drop Checker is an essential tool when injecting CO2 into your aquarium...

Aquarium Corner Bio Sponge Filter Replacement Sponges XY-2892 Pack of 10

Replacement layered Sponges for mini aquarium single barrel air-driven bio sponge filters. The repla...

CO2 Regulator Dual Output – Two Bubble Counters & Gauge

This premium dual-output aquarium CO2 regulator is perfect for aquarists running two tanks from a si...

CO2 Splitter – 4-Way Needle Valve with FREE Extension Rod

Easily distribute CO2 from one cylinder to up to four aquariums using the Castle Dawn Aquatics 4‑Way...

Castle Dawn Aquatics DIY N0.2 External Canister Aquarium Pre Filter System

Transform your aquarium with a filtration system that feels truly dependable. This DIY External Aqua...

Castle Dawn Aquatics CULTIVATOR Aquarium Time Release Fertilization Root Tabs

Size: 40 Tabs Slow-release over a period of 4-6 months. Promotes strong root development for lu...

Double 7-layer Bio Sponge Filter for up to 50 Litres

QS100A Filter comes with media and two replacement sponges . QS-100 Filter comes with two replacemen...

Aquarium Small Alloy Multicolour CO2 Ceramic Disk Diffuser

At 6cm the CO2 diffuser is perfect for nano aquariums. The diffuser is made from high grade steel al...

LH Series Replacement Sponges Fluidized Reactor Filter Pack of 10

Replacement sponges for the fluidized reactor LH 300 and LH 600 filter. The replacement sponges are ...

CO2 Bubble Counter – Single Non-Return Valve

Ensure precise CO2 monitoring in your planted aquarium with the Castle Dawn Aquatics Single Head CO2...

Small Filter Replacement Layered Sponges XY-180 Pack of 6

Replacement layered Sponges for aquarium single barrel air-driven bio sponge filters. The replacemen...

CO2 Splitter – 3-Way Needle Valve with FREE Extension Rod

Easily distribute CO2 from one cylinder to up to three aquariums using the Castle Dawn Aquatics 3‑Wa...

Aquarium Bio Sponge Filter Replacement Suction Cups Pack of 10.

Pack of 10 replacement black suction cups for the old faithful dual layer and single layer sponge fi...

Aquarium CO2 Regulator with Double Gauge & Bubble Counter – W21.8 Valve

Keep your planted aquarium running efficiently with the Castle Dawn Aquatics Double-Meter CO2 Regula...

CO2 Solenoid Valve – Inline Magnetic Regulator

This compact and reliable CO2 solenoid valve is designed to provide safe, energy-efficient control o...

CO2 Splitter – 2-Way Needle Valve with FREE Extension Rod

Easily distribute CO2 from one cylinder to up to two aquariums using the Castle Dawn Aquatics 2‑Way ...

Aquarium Corner Bio Sponge Filter Replacement Sponges XY-2890 Pack of 10

Replacement layered sponges for corner air-driven bio sponge filters. The replacement sponges are un...