10 Best Fish Tank Starter Kits 2025 in the UK

The Hagen Fluval Flex Aquarium Kit is a stylish and functional choice for beginner and intermediate fish enthusiasts. With a 57-litre capacity, it offers ample space for a variety of fish and plants. The tank includes a powerful 3-stage filtration system that ensures superior water quality, which is beneficial for maintaining a healthy environment for your aquatic pets. Additionally, the included oversized mechanical, chemical, and biological media enhance the filtration process, making it easier to manage and maintain the tank.

The 7500K LED lamp not only supports plant growth but also enhances the vibrant colors of your fish, creating a visually appealing display. The fully adjustable White + RGB LEDs allow for endless color blends, and the FlexPad remote control provides convenience with fun special effects. However, the tank's shape is oval, which might limit some decorating options compared to standard rectangular tanks. At 12.72 kilograms, it is relatively heavy, which could be a consideration for those who need to move it around.

The kit does not include a heater, which is essential for tropical fish enthusiasts, so you would need to purchase this separately. Some users may also find the remote control a bit complex to use initially. The Hagen Fluval Flex Aquarium Kit is a well-rounded starter kit with effective filtration and lighting features, suitable for those looking to create a vibrant and healthy aquatic environment indoors.

The Tetra Starter Tropical Fish Aquarium is a solid choice for someone new to keeping tropical fish. Its 105-liter glass tank is a good size for beginners, offering enough space for a variety of small fish while still being manageable. The tank is sturdy with 6-mm-thick glass and comes with a robust lid that includes a feeding flap, which helps make feeding easier without removing the entire cover.

The kit includes a powerful 100-watt heater preset to 25°C, which is ideal for most tropical fish, ensuring a stable and comfortable environment. The filter system is a Tetra EasyCrystal model with 7.5 watts of power and comes with two replacement cartridges, providing good water filtration to keep the tank clean. The energy-efficient 16-watt LED lighting has a day/night mode, which helps mimic natural light cycles for your fish.

The kit doesn’t include substrate (like gravel or sand), so you’ll need to buy that separately to complete the setup and give your fish a comfortable home. Also, the energy efficiency rating is F, meaning it might use more electricity compared to other models with higher ratings. Its dimensions (37 x 76 x 59.5 cm) and weight (15.4 kg) make it suitable for indoor use where you have enough space to set it up safely. This kit includes extras like fish food and water conditioner, which are helpful for beginners. While not the cheapest option, the comprehensive components and reliable brand reputation make it a practical and convenient starter kit for anyone looking to set up a tropical fish tank with minimal fuss.