Calcium Peroxide 500g *dangerous goods charge extra* pH logging clean and calibrate

clean and calibrate

smallBoy: Replace after 3

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Calcium Peroxide 500g *dangerous goods charge extra* pH logging clean and calibrateAs an amendment to your potting soil, the recommended rate is: 9 grams 1 tbsp 15ml per 1 gallon of soil 4 liters. If you would like to mix larger quantities (usually in a toy swimming pool or on a sheet of plastic) mix in 4tbs (60ml) per cubic foot, so approximately 16 20 tbs (240 300ml) per bale of Sunshine or Pro Mix. Always wear a mask or respirator, gloves, and goggles (especially the mask or respirator) as directed. There isnt much information