Oyster Shell Flour Size:4 lb An alternating voltage is applied

An alternating voltage is applied to the sensor and the amount of current that passes between the two stainless steel pins determines the amount of dissolved ionic solids present

Full sun exposure aids their growth

Whether you're training tomatoes

cinder blocks

Power Cord: 6' long

Oyster Shell Flour Size:4 lb An alternating voltage is appliedOyster Shell Flour is an all natural calcium adjusting plant amendment. Add oyster shell flour to correct calcium in your soil. Oyster shell meal also corrects low pH in soil. Oyster Shell meal contains a selection of micronutrients to keep your plants healthy. Organic Oyster Shell Flour. How to use: For transplants and new plants apply 1 2 tbsp per gallon of soil For established plants top dress at a rate of 1 2 tbsp per gal of soil and apply once