Active Aqua Grow Flow 12 Site Ebb & Flow Hydroponic Grow System — 5 Gallon

The system uses timed cycles to pump nutrient solution from the 55-gallon reservoir into your bucket modules (flood phase). The 7-gallon controller regulates the process. After a set time, the solution drains back into the reservoir (drain phase). This cycle provides roots with nutrients, water, and oxygen while preventing overwatering.

Yes, the Ebb and Gro controller and dual 250 GPH pumps are designed to support up to 24 five-gallon bucket modules. You can purchase the Active Aqua Grow Flow 2.0 Expansion Kit to add additional buckets while using the same controller and 55-gallon reservoir.

Each bucket holds 13 liters of growing medium. Clay pebbles (hydroton) are most popular for ebb and flow systems due to excellent drainage and reusability. Other options include perlite, coco coir, or rockwool cubes. Avoid soil as it can clog the system and contaminate your reservoir.

Most growers run 2-4 flood cycles per day using the Grasslin timer, with each cycle lasting 15-30 minutes. Seedlings need less frequent watering (2-3 times daily), while mature plants may benefit from 4-6 cycles. Adjust based on plant size, growth stage, and environmental conditions.

Each bucket is 12.5" x 12.5", and you'll need space for the 55-gallon reservoir and controller. A typical layout requires approximately 6x8 feet for all 12 buckets with adequate spacing. Many growers use a 4x8 or 5x10 grow tent/room to accommodate the complete system comfortably.

Yes, change the complete reservoir every 1-2 weeks depending on plant size and growth rate. The large 55-gallon capacity helps maintain stable nutrient levels between changes. Monitor pH (maintain 5.5-6.5) and EC/PPM levels regularly, topping off with water or diluted nutrients as needed between full changes.

During power outages, the system simply stops flooding until power returns. Plants will be fine for several hours as the growing medium retains moisture. For extended outages, you may need to manually water plants. The Grasslin timer will resume its schedule once power is restored.

While the Grow Flow system is more advanced than simple DWC systems like the Active Aqua Root Spa, it's beginner-friendly once assembled. The automated controller eliminates manual watering, and the included instructions guide you through setup. Most growers find it easier to maintain than hand-watering soil plants, especially at this scale.