Growco Indoor Garden Supply is the premier garden supply store in Grand Rapids. Whether it’s an outdoor garden, or indoor, Growco has it all.
Safe, secure hydroponics ordering!
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One-stop shopping for indoor gardening supplies, including hydroponics systems, grow-room equipment, hydroponics nutrients and fertilizers, HID lighting and growlight bulbs. Plus, any grow room supplies you many need for successful hydroponics or soil gardening.

Growco carries brand name hydroponics equipment from quality manufacturers such as , Sunleaves, Sunlight Supply, Hanna Instruments, Harvest-Master.


Nothing beats compost for improving soil for your garden. That’s how Mother Nature intended it, but we have some options to give her a hand in decomposing yard and garden debris in a more speedy fashion!


Ebb and Flow hydroponics uses a tray to hold your plants above a reservoir of nutrient solution. The tray holds the pots filled with growing medium. At regular intervals, a timer starts the pump so it fills the tray with the nutrient solution, then drains back down into the reservoir.
This keeps the plant roots regularly drenched with nutrient and air, both essential to healthy plant growth.