Grodan Pargro QD (4 in x 4 in) with hole, 72 Cubes Power All Extended Service Life: Reversible flange

Extended Service Life: Reversible flange and base intended for extended service life

And the fifth and final ingredient is the specialized "chelates" we've already talked about that get these high-powered nutrients into your plants as fast and as efficiently as possible

1 Amp/120 Volts/60Hz

US patents pending: 29/460230

Hurricane® Inline Fans are commercial grade

Grodan Pargro QD (4 in x 4 in) with hole, 72 Cubes Power All Extended Service Life: Reversible flangeSame quality, same value priced, Half sized cases. Driest value priced rockwool on the market. Made at the Grodan factories. Plain brown half case sizes. Better quality and drainage than other value priced rockwool.