If you’re looking for affordable aquarium essentials, you don’t need to spend a fortune to get your setup right. These five budget-friendly products from Cornwall Aquatics will help you improve water quality, maintenance, and overall tank health without overspending.
Affordable Aquarium Essentials Under £25
🪶 1. Aquadip Dosing Pump 2ml — £0.50
Why it’s great: A tiny but incredibly useful tool, this little pump helps you deliver liquid supplements accurately — especially if you dose plant ferts or water conditioners.
How it helps: Precise dosing means fewer mistakes and healthier water chemistry.
👉 Buy it here
🧼 2. BiOrb Service Kit — £8.99
Why it’s great: A complete maintenance helper for BiOrb aquariums, it includes a mechanical and chemical filter cartridge, cleaning cloth (perfect for acrylic), and essential water conditioners.
How it helps: Makes routine cleaning fast and keeps water clearer longer — so your fish and your view stay happy.
👉 Buy it here
🧹 3. Bladerunner Glass Cleaner New Blades — £8.99
Why it’s great: Algae build-up happens — and this slim magnet scraper makes it fast to remove. With options for glass or acrylic, it’s an essential cleaning tool for ongoing care.
How it helps: A crystal-clear tank means better viewing and healthier fish! (Plus it saves you from scratching your aquarium with risky tools.)
👉 Buy it here
🍽 4. Tetra Discus Granules — Low-cost premium food
Why it’s great: A well-rounded food option that works for many tropical fish — especially discus or other colour-rich species. Highly palatable and nutritionally balanced.
How it helps: Good food means lively fish and vibrant colours. Perfect for everyday feeding.
👉 Buy it here
🥶 5. Colombo CO₂ Reactor Refill (2 x 1000ml) — £19.99
Why it’s great: This refill pack keeps your Colombo CO₂ Reactor running — making CO₂ for planted tanks without expensive canisters.
How it helps: Boosts plant growth and tank health on a budget — great for beginners and plant lovers alike.
👉 Buy it here
🧠 Why These Essentials Matter
✔️ Affordable — all under £25
✔️ High impact — each one makes your aquarium easier to care for
✔️ Great for beginners & pros alike
Whether you’re just starting out or maintaining an established setup, these essentials will give you big value for less. And remember — if you need help choosing the right items for your specific tank, Cornwall Aquatics are happy to advise you.
Visit our shop in Bissoe, Cornwall for Walk-In Wednesdays (10am – 5pm), get supplies from our ONLINE SHOP or message us if you need support & advice!
Please note: prices are correct at time of publishing this article – they can change over time.