Potassium Phosphate KH2PO4

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    Monopotassium Potassium Phosphate KH2PO4

    Dosing KH2PO4 Monopotassium Potassium Phosphate into the aquarium can be of huge benefit to aquarium plants. The dry solution offers nutrients to planted aquariums, and helps plants to maintain a healthy growth similar to that found in their natural environment. The macro nutrients, Phosphorous [p] and Potassium [k], help to fertilise the aquarium, keeping the plants healthy thus keeping away algae, and help to keep the environment balanced. Monopotassium Potassium Phosphate (KH2PO4) contains 22.8% phosphorous (P) and 28.7% potassium (K) Phosphorus [p] is the second of three major nutrients that are essential to a plants survival and wellbeing. Combined with nitrogen [n] and potassium [k]. Phosphorus, along with nitrogen, is an essential element in the formation of chlorophyll in plants. Phosphorus also aids in the formation of necessary energy components such as sugars and starches. Because all plants need three major nutrients – nitrogen, phosphorous and potassium – the KH2PO4 combination provides two of the main ingredients, and can be combined with other products, to vitalise a flourishing aquarium.

    Plants need natural elements and if the three main nutrients are not present, the plants may simply die. Phosphorous is needed for cellular structure and Potassium is important for optimum growth, so KH2PO4 is a crucial ingredient for aquatic plants. This is a fantastic way to assist with natural and safe growth, and dosing bottles are available for error free applications.

    Dosing bottles, along with additional nutrients and plant fertilisers, are available in our online shop, click here

    Please note; no chemicals or fish foods can be sent outside of the EU, any orders from outside of the EU will be cancelled.

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    Shipping fees include packing fees as well as postage costs. Packaging fees are fixed, whereas transport fees vary according to the total weight of the shipment. We advise you to group your items in one order. 

    Packaging is amply sized, and your items are well-protected.

    We aim to ship orders within 1-3 working days. Sometimes delays will occur because of national holidays etc., we will always ship as soon as we possibly can.

    Standard Shipping:

    All orders up to 2kg will be sent with Royal Mail (1st Class) Signed For service.

    All order over 2kg will be sent via a courier, sometimes depending on the makeup of the order, we will split into 2 parcels and ship via Royal Mail.


    UK up to 1000g £3.99

    UK up to 2000g £6.99

    UK up to 5000g £9.99 

    EU up to 1000g £7.85

    EU up to 2000g £13.85

    EU over 2000g (variable, dependent on location, in some cases it may be cheaper to split the parcels down to under 2000g and have 2/3 parcels instead)

    Get an Exact quote for delivery, add the items you would like to purchase to the shopping basket, and then head to the shopping basket page. Here, you will find a postage calculator that will combine your items to provide you with instant delivery options and quotes. Please note you DO NOT need to register or enter any personal details to get a postage quote.

    Free Shipping:

    Free shipping for all [UK] orders over £60.

    Free shipping will be shipped by whatever method we deem best for the products chosen.

    Free shipping is for UK mainland only. No free shipping to Europe or the Rest of the World.

    For customers who do not notify us within 30 days of their product not arriving, we cannot offer a replacement or refund. You must apply or notify us before that time period. After 30 days we are no longer able to claim by royal mail.

    Delayed Parcels:

    Sometimes goods take longer than normal to arrive with Royal Mail. Customers are not entitled for us to send a replacement in the meantime. We are legally obliged to wait 15 working days (3 weeks) for a parcel to be considered as lost - only then will we issue a replacement and not a refund. See Royal Mail website for further detail:


    Change of Delivery Address:

    If you need to change your delivery address please contact us as soon as possible stating your order number. If your order has not yet been dispatched your item may be sent to this new address at no extra charge.

    In the unlikely event that an order is undeliverable due to the address not being found or the order not being received, the order will be returned to us. If this happens we may be able to offer a free re-delivery depending on the courier used. However, we reserve the right to deduct the original delivery charge from any refund to you, or to charge additional delivery if we have to resend the same items to a new address.

    Incorrect Delivery Address:

    To ensure we successfully deliver the items to the address our customers supply, please ensure you supply Aquarium Plant Food UK with a full and correct delivery address. 

    If the address you supply results in a non-delivery due the address being incorrect you, the customer, will be liable for any extra delivery charges incurred. If the item is lost as a result of wrong delivery details the customer will be responsible for this loss. 

    If however, an error occurs on our system resulting in the wrong delivery or order details, we will do everything in our power to rectify the situation at no extra cost to the customer.

    All courier deliveries will arrive 1-2 days [after dispatch] - Unless you are in a Highlands/ Islands, Northern Ireland or European Location. If for any reason your parcel does not arrive please contact us as soon as possible.