Fluval Cycle Biological Enhancer is a biological aquarium supplement to create a healthy aquarium for fish. It goes to work fast, releasing massive amounts of beneficial bacteria that eliminate toxic ammonia and nitrites while creating a biologically well-balanced aquarium for healthy fish to thrive. Fluval Cycle Biological Enhancer is strongly recommended for new aquariums. It quickly establishes your aquarium and fish can be added immediately. Also regular application helps to exclude the establishment of undesirable bacteria in aquariums. It eliminates toxic ammonia and nitrites which are a result of fish waste, excess decomposing food and other decaying organics. It is a natural product that with regular use will help to keep your aquarium contaminant-free and your fish healthy for longer.
Dosage:For New Aquariums:
Day 1: 25 ml per 38 litres
Day 2: 10 ml per 38 litres
Day 3: 10 ml per 38 litres
For Maintenance (weekly maintenance, changing water or filter):
5 ml per 38 litres
Adding new Fish:
10 ml per 38 litres
Hagen take pride in providing the best in pet products. They recognise specific requirements of different pet species and develop products to meet their individual needs. Their product range includes cages, accessories, toys, food and supplements. Their innovative designs ensure that caring for your pet is easier and their food provides the nutrition your pet needs, so you can be sure that your pet has everything it needs to be healthy and happy.
Delivery & Returns
The standard Delivery charge is €5.75 for up to 30kg. FREE Standard Delivery on orders over €30. Orders are dispatched between Monday - Friday. Customer should receive their orders within 3 - 4 working days after the dispatch.
Priority delivery charge is €5.95 up to 30kg irrespective of order value. Orders are dispatched within 24 hours between Mon - Fri. The order's dispatch is prioritized over standard orders and customers should receive their orders within 2 working days after the dispatch.
Delivery to the mainland UK is charged at €10 for orders under 25kg. Please note, we do not deliver outside the mainland UK.
For more information, visit our page here.
Why buy from Petworld?
We are dedicated to providing our customers with the best experience possible, and strive to make Petworld your first choice for the best products, superior customer service and an easy-to-use and secure on-line shopping experience.
- Free delivery on orders over €30. All other deliveries are just €4.90.
- Frequent buyer program - buy 9 bags of dog or cat food and get the 10th free. Get the details here.
- Product selection - we offer an extensive range of products for all your pet's needs.
- We're Irish - we're an Irish company, supporting Irish jobs.
- Personalised customer service - we have real people answering your questions.
- Regular communication - we stay in touch every step of the way, from order confirmation to dispatch.
- Knowledgeable and passionate staff - we're passionate about what we do and it shows. We train our staff to offer the highest quality advice and customer service.
- We respect your privacy. We won't share your personal information with 3rd parties.
- Easy returns - We want you to feel comfortable with your purchasing decision, so we offer a 100% satisfaction guarantee. If you're unhappy with your order, just send it back.
- Thousands of satisfied customers. We've been in business over 20 years. We're still around thanks to thousands of happy customers.