Aquacadabra Vanquish Black Pond Water Dye – Algae Control for Ponds & Water Features

Aquacadabra Vanquish Black Water Dye is a highly effective and economical treatment for controlling algae growth in garden ponds and water features. Designed for use in early spring, this concentrated dye works by reducing sunlight penetration, helping to prevent algae before it takes hold.

With a straightforward dosing rate of 1ml per 1 litre of pond water, it’s easy to apply by pre-mixing with pond water in a watering can or bucket, then spreading evenly over the pond’s surface. The dye disperses naturally throughout the water column, and while it may appear darker at first, it will balance out over a short time.

In addition to algae control, the dye gives your pond a natural, reflective black tint, enhancing its depth and visual appeal.

• 100ml – Treats up to 100 litres
• 250ml – Treats up to 250 litres
• 500ml – Treats up to 500 litres

Key Features:

•  Prevents Algae Growth – Limits sunlight exposure to suppress algae
•  Highly Economical – Just 1ml treats 1 litre of pond water
•  Easy to Apply – Mix with pond water and pour evenly across the surface
•  Natural Appearance – Adds a subtle black tint for a reflective, professional look
•  Versatile Use – Suitable for both ornamental ponds and water features

• Initial Dose: 1ml per 1 litre of pond water
• Topping Up: Add 10% of the original dose monthly to maintain the desired effect
• Best Time to Apply: Early spring, before algae begins growing
• Mixing Note: Water may look darker for the first few days until fully dispersed

• Wear gloves, protective clothing, and eye protection
• Avoid contact with undiluted dye on skin or clothing – may cause staining
• Store out of direct sunlight. Do not allow to freeze
• Keep out of reach of children

Pond Volume Calculator:
Length (ft) × Width (ft) × Depth (ft) × 6.23 = Gallons
1 gallon = 4.54 litres

Aquacadabra acts as credit broker/intermediary and not as a lender.

Klarna's credit products are provided by Klarna Bank AB, which is authorised and regulated by the Swedish Financial Services Authority, with limited supervision by the Financial Conduct Authority. More information can be found here.

Newpay finance options are provided through Deko’s platform by NewDay. P.D. Aquatics Ltd, t/a Aquacadabra is an Introducer Appointed Representative of Pay4Later Ltd, t/a Deko, which is authorised and regulated by the Financial Conduct Authority (ref no 728646) and is a credit broker, not a lender. NewDay Ltd is authorised and regulated by the Financial Conduct Authority (ref no 690292) and is authorised by the Financial Conduct Authority under the Payment Services Regulations 2017 for the provision of payment services (ref no 555318). More information can be found by clicking the newpay option above, or in the Newpay FAQs.

We really want you to be happy with the product that you've received. If however, when the goods arrive they're not what you want, then no problem - we have a 60 day no quibble return guarantee. Just let us know that you're going to return the item(s) by contacting us(stating your Order Number) and complete the returns packing slip that will have been included with your delivery. This will help us to quickly identify the item that you have returned (unopened and unused) - and we'll put a refund through for you.