Growfax South

Grofax South is a Castle Rock, CO hydroponic supply center that has a large selection of indoor garden supplies and equipment. We offer free consultations, specialize in commercial and residential applications, and have over 5,000+ items available for indoor and greenhouse gardening. We offer competitive pricing and we will price match any competitor in town.


If you are interested in indoor gardening with hydroponic systems we can help you put together a starter kit, recommend appropriate garden nutrients, and meet your need for quality hydroponic supplies and equipment as your plants progress. We will show you how to set up your hydroponic garden, get your plants going, and monitor pH, nutrients, water quality, and light timing processes.


Plant nutrients are a key factor in indoor and greenhouse hydroponic gardening. We sell top quality nutrients that make greenhouse gardening easier, increases plant size, and gives you bigger harvests.


Whether you are a residential indoor gardener or a professional commercial grower with hundreds of plants, you can always get a bigger yield and better production when you have expert advice and excellent equipment. When you are lacking inspiration in your indoor garden come to Grofax South in Castle Rock, CO and let our experts inspire you.