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Gro Block Improved Small 3Inches GR4 w/ hole (3Inchesx3Inchesx2.6Inches) (8/strip- 48 strips per cs) 384 per case pH | ppm | EC | Instruments It also provides a healthy

$109.16

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It also provides a healthy dose of magnesium

The Fixture Runs 2 pcs 315W CMH Lamp Bulbs

easy to clean and convenient to use

Black Ops filters have a built in flange and 2 pre-filters are included

3x3 Tray:  42

Gro Block Improved Small 3Inches GR4 w/ hole (3Inchesx3Inchesx2.6Inches) (8/strip- 48 strips per cs) 384 per case pH | ppm | EC | Instruments It also provides a healthy

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