2 inch Net Cup, bag of 200 CO2 " Because your pumps are

" Because your pumps are only working for a short time each day

Unlike typical magnesium sulfate products in the fertilizer industry

Measure by weight

Replace Pro Core during the final 3 weeks of flower

Salt-Free Plant-Based Fill: A glycerin and water blend rather than a salt solution

2 inch Net Cup, bag of 200 CO2 " Because your pumps areGrow like a pro with Hydrofarm's assortment of net cups, mesh pots, and baskets. They are great for all your plants, and promote healthy roots by offering even drainage. Allowing roots to grow through the large mesh grid promotes bigger, healthier roots. You can use these with any of your favorite growing media.