The cookie settings on this website are set to 'allow all cookies' to give you the very best experience. Please click 'Ok' to hide this message.
Free NEXT DAY Delivery over £50Excludes certain areas – click for details
1000s of Products in Stock
Price Match Guarantee
Next Working Day DeliveryOrder before 2pm
Pond Calculators
This new treatment from Oase works in two ways. First it adds beneficial bacteria and enzymes that remove organic waste, ammonia and nitrite that are a problem in new pond and filter set ups, helping to keep fish safe from the harmful effects. Next they dissolve slowly releasing important trace elements and minerals that are often missing from garden ponds.
You can put DuoBoost straight into the filter or, using the net nag provided, into the pond. Choice of two sizes of gel ball.
DuoBoost 5cm 250ml treats up to 20,000 litres
DuoBoost 2cm 250ml treats up to 30,000 litres
DuoBoost 2cm 2.5 litres treats up to 90,000 litres
Sku: OADB78110
Receive exclusive offers and discounts directly to your inbox!