Best Selling Products
Glass CO2 Drop Checker - Orb Style
$12.57
Keep your planted tank thriving with the Castle Dawn Aquatics Orb Drop Checker. This elegant glass tool helps monitor dissolved CO2 levels in your aquarium, changing colour based on the...
Castle Dawn Aquatics CO2 Spiral Glass Bubble Counter
$24.99
Enhance your planted aquarium CO2 system with the Castle Dawn Aquatics CO2 Spiral Bubble Counter. Made from high-clarity borosilicate glass, this elegant bubble counter not only monitors your CO2 injection...
Super CO2 Compact Internal Diffuser up to 45 Litres
$19.99 – $24.99
The Castle Dawn Aquatics Super Diffuser is a sleek, internal CO2 diffuser designed for smaller aquariums. It effortlessly connects to standard CO2 tubing and secures easily inside the tank, delivering...
Acrylic CO2 Diffuser – Medium (19 mm Ceramic Disc)
$17.99
The Castle Dawn Aquatics Acrylic CO2 Diffuser offers superior micro-bubble diffusion for planted aquariums. Designed with advanced micro-porous ceramic technology, it produces finer bubbles than traditional glass diffusers, allowing CO2...
Adjustable Rotating Air Stone Discs - 2-Pack
$8.30
Enhance your aquarium’s oxygenation with the Castle Dawn Aquatics 2-Pack Adjustable Rotating Air Stone Discs. These uniquely designed rotating air stones produce uniform, dense micro-bubbles that improve water oxygen levels...
XP-1020 Dual Outlet Aquarium Air Pump – Adjustable 840 L/hr
$36.98
The XP-1020 Dual Outlet Aquarium Air Pump from Castle Dawn Aquatics combines power, quiet performance, and user-friendly control in one sleek, modern design. Featuring a transparent visual structure, durable polycarbonate...
SUNSUN Pond CPF/CPA 30000 Canister Filter Replacement Crank Handle
$38.99
Replacement clean crank handle for SunSun CPF/CPA 30000 pond filter range. If you can not find the replacement part for your filter model please drop us an email. We carry...
SUNSUN Pond CPF/CPA 20000 Canister Filter Replacement Crank Handle
$38.99
Replacement clean crank handle for SunSun CPF/CPA 20000 pond filter range. If you can not find the replacement part for your filter model please drop us an email. We carry...
Kielmeyera Pods (12 Pack)
$9.99
Kielmeyera Pods are a superb botanical choice for enhancing both the aesthetics and function of blackwater aquariums and terrariums. Native to South America, these pods are ideal for authentic South...
Medium Elephant's Ear Pods (20 Pack)
$23.39
Elephant Ear Pods are a striking and highly functional botanical choice for both blackwater aquariums and bioactive terrariums. Their thick, woody structure ensures slow degradation, making them a durable and...
Medium Urchin Pods (6 Pack)
$19.38
Add a touch of the Amazon to your aquascape or terrarium with Castle Dawn Aquatics Urchin Pods, naturally fallen seed pods from the Cochlospermum regium tree. These beautifully textured botanicals...
Polar Aurora 266GPH Canister Filter Tap Valve Set Inlet Outlet
$12.99
Genuine Polar Aurora 266GPH series external canister filter replacement tap valve. If the replacement tap valve you are looking for is not available for purchase please drop us a message,...