Free shipping on orders over £50 | Free local delivery on orders over £30*

Cloverleaf Pre-Vent Blanketweed Treatment

Cloverleaf Pre-Vent Blanketweed Treatment

Regular price £49.99

Unit price per 


only 2 left in stock

PRE-VENT is safe for all pond fish, plants and biological filtration systems.

PRE-VENT is to be used every 10-14 days approx to help rebalance your pond. To aid in the prevention of and the return of stubborn Blanketweed.

Suggested Dosage

Add 10g per 266 gallons (1207 Itr) The enclosed scoop can be used 1× scoop = approx 800 gallon

(3632 (tr). The dosage can be adjusted as required with no adverse effects. We recammend dosing 10-14 days approx after using Cloverleaf Blanket Answer.

PRE-VENT is to be added to the pond by mixing with sufficient pond water and spread evenly around the entire surface of the pond. The pond will take on a mild cloudy appearance which will usually clear in a few hours.


If river type fish are present pond saturated oxygen levels need to be maintained at a high level.


We strongly recommend the use of Cloverleaf Absolute Pond Pearls for the general well being and maintenance of your pond Its unique natural bacteria will consume and break down organic waste material that accumulates in your pond and filter converting it to nutrients for pond plants.

Water Volume Calculator:

Measure in feet- Length x Width * Average Depth x 6.25 - Total Gallons

Standard delivery (3-5 Working Days) : £3.49

Next day Delivery (1-2 working days): £5.99

Free standard delivery on orders over £50*.

Orders will be fulfilled same or next day.

Live plants will be sent out by Royal Mail First Class post. In order to ensure they reach you in the best condition possible, orders placed over the weekend will be sent out first thing Monday morning.

Due to COVID-19, there may be a slight delay to delivery times, in a small number of cases delivery may take up to 3 working days longer than usual.

We appreciate your patience in these times.

*Additional fees apply for some bulky or fragile items. The products which qualify as bulky or fragile will be indicated as such in the description. These items do not qualify for the free shipping promotions.

If you have any issues placing an order please contact the shop for assistance at 0208 906 9916

If you live in the local area and spend more than £30 you are eligible for free local delivery! 

Local delivery for orders under £30 will cost £4.99. We aim to deliver your goods within 48 hours but please allow up to five days as there can be a slight delay us getting to you. Please include your phone number in your order details so that we can contact you with a delivery window.

Eligible Postcodes:

  • N2, N3, N6, N20
  • NW3, NW4, NW6, NW7, NW8, NW11
  • HA7, HA8 

If you live in the surrounding area but your postcode is not on the list, feel free to give us a call and we will see what we can do. 

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