Grodan Delta Blocks (384 Box) - 75mm x 75 x 65 (3") Small Hole (306564) Shipping Not just a simple acid:

Not just a simple acid: GHE pH Down makes a real contribution to nutrient solution stability To make GHE pH Down we carefully blend three acids commonly used alone in hydroponics to give you all the benefits of each - without the disadvantages

And of course keeping a pack or two of these on hand for when your tank runs out or to make your tanks lasts longer or to use when you don't want the heat of your gas generators is a great idea

Pro-swirl Eliminate hot spots and high humidity zones with the ultimate air diffuser from Black Orchid

400w and 250w dual spectrum HPS grow lamp puts out both red spectrum and enough blue spectrum light to be used as a sole light source throughout all stages of growing

A universally applicable light spectrum enables both the raising of young plants and seedlings as well as the successful cultivation of ornamental

Grodan Delta Blocks (384 Box) - 75mm x 75 x 65 (3") Small Hole (306564) Shipping Not just a simple acid:Grodan Delta Blocks planting on blocks Once seeds or cuttings are rooted in a propagation cube, transplant them to a Grodan Delta Block. 3 and 4 blocks are ideal for use in NFT, slab culture, dripper or Ebb & Flood systems. 6 Hugo cube can be used for deep Ebb & Flood tables or passive pot culture.