Rain Water Catching System for a Greenhouse

Welcome back to Base Camp WNC! We're excited to share the progress we've made on our latest project: setting up a rainwater collection system to irrigate a greenhouse. Since there is no access to well water, we've devised a system to collect rainwater. Join us as we take you through the process.

First, we enlisted the help of Mr. Will, an expert dirt excavator, to dig down and prepare the area. In hindsight, using a mini X would have been more efficient for this task. Nonetheless, we pressed on with the excavation, using tractors and shovels to ensure the area was properly leveled. To achieve this, we added a generous amount of fine rock dust and meticulously checked the level.

With the groundwork completed, it was time to set up the rainwater tank. We began by drilling multiple holes in a pipe, ensuring the total area of the holes matched the tank's specifications. Next, we assembled the components, including a steel nipple, adapter, and a 90-degree pipe, which would be attached to the tank's interior fitting. This setup allowed for a six-inch gap between the bottom of the tank and the water intake to prevent the suction of sediment or debris.

Carefully positioning the tank, we placed it on a bed of ground-up rock powder for stability. Once in place, we installed the necessary plumbing fittings, such as street L's, valves, and caps, using a union and check valve to ensure smooth water flow. We strategically located the tank near the building to simplify the electric connection for the pump, which would be a 110-volt model from Harbor Freight. Additionally, we planned to include an expansion tank to support efficient hose operation and drip irrigation for the tomato plants in the greenhouse.

Having secured the tank, we enclosed it with eight-inch plastic culverts, allowing easy access while protecting it from dirt and debris. The suction line for the pump was outfitted with a valve, union, and a check valve to prevent water backflow. We also labeled the flow direction for future reference. The existing tank already had three holes, one of which we capped off, while another featured a valve for potential rain gutter installation. The remaining hole was designated for the standpipe, which connected to the pump house located at the back corner of the tank.

To complete the setup, we connected the pump's outlet to a hose bib, reducing the diameter from one inch to three quarters. This hose would carry the water down to the greenhouse, conveniently drilled with an opening to accommodate the electric line. As the system was only intended for seasonal use, we constructed a simple wooden frame above the pump, prioritizing functionality over freeze-proofing during winter months.

To improve aesthetics and protect the tank from UV damage and algae growth, we painted it, matching the farm building's colors. The silver top even mirrored the metal roof. Backfilling was done around the tank, ensuring stability and a finished appearance.

We hope you've enjoyed following our simple yet effective rainwater collection system installation. If you have any projects or need assistance, feel free to contact us using the provided email or phone number. Don't forget to like, share, and subscribe to stay updated on our latest endeavors. Your support and comments are always appreciated. Until next time!