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The Bluelab pH Pen is the preferred option for hand help pH meters
When it breaks down
contains no sediment and has been manufactured so all nutrients are instantly available to your plant
Alaska Fish Fertilizer 5-1-1 provides a rich source of organic matter that breaks down and releases nutrients into the soil to enhance the strength and vigor of your plants
Proper UV balance
Gaia Green Fishbone Meal 6-18-0 Size:1.8kg The Bluelab pH Pen isGaia Green Fishbone Meal is made from 100% wild ocean fish and is Gaia Green's highest available phosphorus fertilizer. It also contains many trace minerals and 6% nitrogen. It is a great choice in situations requiring high phosphorous such as rooting and flower development or as a replacement for other bone meal products.