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has a high cation exchange rate with potassium
NOTE: Photo shows full display
2 RAW Kelp - 8 oz
from gardens and aquariums to pools and more
HM Digital Waterproof pH Meter Model PH-200 extraction has a high cation exchangeThe Pro HM digital pH meter with get you the results you are looking for. The pH meter is designed for testing and monitoring your precious crop. Easily measure pH and temperature of water.
US$ 159.90
US$ 50.00
US$ 24.99
US$ 165.00
