Mother Earth Large & Coarse Perlite #4 Non-Cooled Reflectors The packs come with an

The packs come with an indicator that changes color when it's time to replace them

or an extensive hydroponic system

Hydroguard is back with a new

25 in (235 mm) Housing Fiberglass composite Certification ETL Commercial/Industrial

Mother Earth Large & Coarse Perlite #4 Non-Cooled Reflectors The packs come with anMother Earth Perlite is naturally occurring siliceous rock that when heated to 1600 F expands up to 20 times its original volume. This kilning process is very similar to popping popcorn and produces a growing medium that is sterile and has a neutral pH of 7. 0. The exceptional physical properties of this giant perlite make it tops in the perlite world for adding porosity to soil and soilless mixes. This giant perlite has numerous hydroponic