Grodan Uni-Slab, 9.5" x 8" x 4" (Case of 16) co2 It fits on either the

It fits on either the ONA Gel Pail or ONA Gel Jar (both of which are 4 liters/1 gal)

steel shutters

and it is available with six different spectral compositions for full-cycle growth and supplemental photomorphogenic response

Highly Reflective Interior: Silver coating maximizes light distribution for optimal growth

Grodan Uni-Slab, 9.5" x 8" x 4" (Case of 16) co2 It fits on either theGrodan Uni Slab, 9. 5" x 8" x 4" (Case of 16) The Grodan Uni Slab combines all the benefits of our traditional slabs with the versatility of a block. Great stability for any size plant. The UNI SLAB is completely wrapped thus keeping all the roots of your plant safely contained within the slab, protected from light and outside contaminants. Yet it's small enough to be maneuverable, allowing your plants to be spaced as the plant canopy requires. The