Why Connect Multiple Totes?
A single 275-gallon IBC tote is useful, but many applications require more capacity. Connecting multiple totes creates a larger storage system while maintaining the modularity and portability of individual units. You can add or remove totes as needs change. Common applications include rainwater harvesting, bulk chemical storage, irrigation supply, and industrial process water systems.
Series vs Parallel Configuration
In a series (daisy-chain) configuration, totes are connected at the bottom so water flows from one to the next. The water level equalizes across all totes automatically. This is the simplest setup — you fill through the first tote and draw from the last one. In a parallel configuration, each tote connects independently to a common manifold. This provides more balanced flow distribution and is better for high-demand applications.
Required Materials
For a basic series connection between two IBC totes, you'll need: two 2-inch bulkhead fittings (one per tote, installed near the bottom), connecting pipe or hose (2-inch PVC schedule 40 or reinforced hose), thread sealant tape (PTFE), a hole saw for cutting the bottle (2-3/4 inch for 2-inch bulkhead fittings), and basic hand tools. Total cost: approximately $30-$50 for two-tote connection.
Step-by-Step: Series Connection
Position the totes side by side on level ground. Mark the connection point on each tote — typically 3-4 inches above the bottom of the bottle on the side facing the adjacent tote. Cut holes using the hole saw. Install bulkhead fittings from inside (this requires removing the top cap and reaching in) and tighten the external nut with a gasket. Connect the two bulkhead fittings with PVC pipe or hose. Test for leaks before filling.
Overflow Protection
Multi-tote systems need overflow protection. Install an overflow pipe near the top of the last tote in the series, directing excess water safely away from foundations and electrical equipment. For rainwater harvesting systems, the overflow can feed into a garden or drainage swale. Size the overflow pipe to handle the maximum inflow rate — typically 4-inch PVC for roof drainage applications.
Common Mistakes
Not leveling the ground (uneven totes don't equalize properly). Using connectors that are too small (restricts flow between totes). Forgetting overflow protection (first heavy rain causes flooding). Placing connection points too high (leaves unusable water below the connection). Not supporting the connecting pipe (weight of water can pull fittings loose). Using non-pressure-rated fittings (static head pressure from stacked water can cause leaks).