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Critical concentrations of Magnesium
which causes the insect to stop eating
Potassium Sulfate
Allow your plants to drink up this formula designed to provide all the macro
such as with existing infestations
Rockwool Block Cover Size:6 Inch (40 Pack) Critical concentrations of MagnesiumPLASTIC BLOCK COVERS Reflect light to plant leaves, where it's needed most. Block light from media. Eliminate algae and mildew growth. 40 dual sided block covers per pack. Works great with GRODAN Blocks. Block light from media Reflect light to plant leaves where it's needed most Eliminate algae and mildew growth 40 dual sided block covers per pack
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