Tropica CO2 System Nano Kit

Tropica CO2 System Nano Kit

Free shipping UK wide over £20*
Free shipping UK wide over £20*

What is Tropica Plant Growth CO2 System Nano?

Tropica Plant Growth CO2 System Nano is a clever solution for precise dosing of CO2 in small aquariums. This complete CO2 system features a disposable recyclable aluminium bottle containing 95 g of pressurised CO2, a regulator, diffuser, hose and rack. Plant Growth System Nano offers precise and stable CO2 regulation and ensures maximum CO2 efficiency to promote plant growth and improve colour development.

What are the benefits of using a CO2 system in your tank?

In a planted freshwater aquarium the correct levels of CO2 are essential for healthy plant growth as the most important nutrient for plants is CO2. Plant Growth System Nano is compact and efficient, providing your planted aquarium with the right amount of carbon dioxide for lush growth and beautiful results. Even a small amount of CO2 can make a significant difference in plant growth and improves colour development.

How to use:

  • Before mounting the regulator on the CO2 cartridge, ensure that the regulator is off completely
  • Fill the diffuser chamber with water
  • Place the cartridge in the rack, slide the suction cups on the hose and mount the hose to the regulator and the diffuser
  • Install the diffuser with the suction cups inside the tank near the bottom and place the hose in the back corner
  • Leave the diffuser for 24 hours in your tank to ensure that the ceramic disc is fully moistened
  • Count the bubbles in the diffuser chamber as you open the regulator carefully
  • Wait 5 minutes, adjust and repeat until the number of bubbles per minute is similar to the recommendation in the table shown on the product images

What is the recommended CO2 concentration for my planted aquarium?

The specification table shows recommended dosage (bubbles per minute) in different planted tank sizes. A 95 g CO2 cartridge contains 50,000 ml CO2. The natural CO2 level in an aquarium is 0-0.5 mg/L of water.

If your aquarium contains only slow-growing easy plants, the addition of CO2 gas into the water should reach a level of approximately 3 mg/L to ensure good growth conditions. The CO2 requirement for medium category plants is approximately 10 mg/L, and for advanced plants is approximately 25 mg/L.

A nano-lifetime cartridge will be too short if you have a larger aquarium with medium or advanced plants. In this case, a larger cylinder, such as a 2 kg refillable, is recommended. All figures are approximate.

    Shipping Terms

    At Complete Koi & Aquatics, we endeavour to process and ship all orders placed online as quick as possible. In order for your order to be processed that day, orders must be placed by 13:00. Working days are defined as Monday to Friday (excluding Bank Holidays and Christmas holiday periods). Orders placed on Saturday, Sunday or bank holidays will be processed the next working day. We do not offer a Saturday delivery option online.
    This delivery policy is strictly only valid for UK mainland delivery addresses. For other destinations please contact our head office on 01204 582105 or email in at

    How Much is Delivery?

    Free Delivery
    ALL orders over £20 qualify for free delivery at Complete Koi & Aquatics. Depending on the size and weight of the product this can range from next day delivery, to a 5 working day delivery. *This does not include livestock.
    Next Day Tracked Delivery - £5.99
    Orders under £20, will have the option to pay £5.99 for next day tracked delivery by APC. In these instances, automated messages will be sent out via text OR email allocating a timeslot for delivery. APC are the ONLY licenced livestock couriers in the UK
    Fish Deliveries
    ALL fish purchased via Complete Koi & Aquatics will also be sent out via APC as a next-day, non-conveyable, wet delivery with an AM time slot. Due to the health of the fish we are unable to offer an afternoon delivery.
    The fish are packed with plenty of oxygen and water to get them through the night. They are kept in the secure caged part of the vans and are handled with care. When the fish arrive, carefully float the bags in the pond to acclimatise them. Generally, we recommend floating the bags for around 30 minutes. After this we then recommend introducing small amounts of pond water to the bag for a further 15 minutes, prior to introducing them to their new home.
    Royal Mail Delivery - £1.99
    Orders under £20 will also have the option to purchase our standard Royal Mail delivery service. This costs £1.99 and generally takes 2-3 working days.
    What happens if the items I have ordered are out of stock?
    In the unlikely event that an item you order should be out of stock we will contact you by phone or email.
    Will you ship my order over split deliveries?
    Your order will be shipped in one delivery. If you would like your order to be split, please contact us. There will be an additional delivery charge for this.


    Dry Goods

    You can return or exchange any goods bought from Complete Koi & Aquatics within 28 days from receiving them.

    If your goods were delivered, on arrival do not sign and accept delivery if there is any indication of damage caused to the goods.

    When choosing products at Complete Koi & Aquatics, please take your time or seek advice from our helpful staff. The return of any unwanted products will be at the customers expense. In order to return goods, they must be in an unused, undamaged, re-sellable condition. You must also present the relevant paperwork when returning goods to help us identify you as the buyer.

    Any non-faulty/undamaged goods which arrive in an unsellable condition will NOT be considered for a refund, exchange or credit. Until we receive the goods, you are responsible for the condition and any damage which occurs to the goods. You should obtain a proof of postage for the goods so that in the event of the goods becoming lost you have a evidence of returning it. Once we have received the goods, we will refund the purchase price (less any original carriage charges) immediately, or in any case within 30 days.

    Damaged/faulty Goods

    Damaged/faulty goods are eligible for replacement subject to individual warranties. Goods must be returned to Complete Koi & Aquatics within 14 days of reporting the issue.

    We require all returns to be sent with relevant documentation to enable us to identify the buyer and cross check the faulty equipment.

    Once received Complete Koi & aquatics will conduct a full assessment of the faulty goods, and on confirming they are damaged OR faulty we will repair or replace them at our discretion. Due to the large range of goods we supply, it may be necessary to send the goods back to the manufacturer for an expert assessment on the alleged damage/faulty.

    If the manufacturer tests the goods and deems them NOT faulty or damaged, they will be returned to the customer at an additional cost to cover postage and packaging. Some high-end products may not be replaced if found faulty/damaged but repaired, this is done at the manufacturer’s absolute discretion.

    Complete Koi & Aquatics does not accept liability for any consequential loss caused by damaged or faulty items, delay in dispatch or delays by couriers.

    Fish/Aquatic Plants

    At Complete Koi & Aquatics, the health and welfare of your fish is our utmost priority. If your fish appears unwell OR in the unfortunate event of losing a fish, then we recommend contacting the store directly. Staff will assist in looking into the cause of the problem and advise on best cause of treatment.

    Recover the body of the fish and place in aquarium/pond water in an airtight container OR bag – DO NOT FREEZE. Take a separate sample of aquarium/pond water Bring the fish and water sample to Complete Koi & Aquatics for detailed analysis, at your first convenience.

    We do NOT accept returns of ANY fish. If you feel your concerns have not been handled correctly, please ask to speak with management.

    Have Questions?Ask An Expert
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