Tetra Pond Sludge Remover Tetra Pond Sludge Remover reduces organic sludge in the bottom of garden ponds. Reduces sediment and accelerates the decomposition of organic substances in garden ponds for greater biological balance. Dosage Rate 50ml per 1000 litres of water. Available in 250ml and 500ml bottles. 250ml treats 5000 litres. 500ml treats 10000 litres. Please select the required size from the drop down menu.
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