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  Outcast Soil Acidifier advert image shown if present

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A make of liquid soil acidifier which is stated as being used to help 'tackle' earthworm casting. The suggested initial application rate is 20 litres of concentrate in 500 litres of water per hectare, then reduced to 10 litres of concentrate in the same amount of water if problems persist. It is part of the Velvit brand that is supplied by GreenBest.