Ebb & Flow Flood Benches

  • Ebb and Flow Bench
  • Ebb and Flow Tray
  • Flood Benches Round Corners
  • Greenhouse Ebb and Flow Benches Leg Connectors
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Inspired by nature, flood benches (also referred to as flood and drain systems, ebb and flow benches or sub-irrigation systems) mean no water logging and no dry periods.  Are you interested in saving water, reducing your labor costs while improving your crop quality?  Flood Benches are the answer.    Water is applied to the bottoms of the plants and allowed to travel upwards to the roots and stems through capillary action.  Flood and Drain benches should be no less than 7 ½ feet long.  Flood benches longer than 60 feet will require the polystyrene ebb and flow tops be assembled in two or more sections.

  • Up to 90% less water consumption
  • Up to 90% less fertilizer usage
  • Up to 60% Reduced labor costs standing watering individual pots and constant checking of watering needs
  • Significant reduction in chemicals – especially fungicides
  • All plants are watered simultaneously and evenly providing better plant growth
  • Crop growth cycle is typically reduced by 1 to 2 weeks
  • Retail areas remain clean and dry and clear of hoses
  • Dry floors and plant foliage make it easier to control relative humidity
Each irrigation design comes with its own set of challenges.  A properly designed irrigation system will provide you with years of payback on your investment. A poorly designed irrigation system will cost you money, time and crop quality.  During sub-irrigation, water is applied to the bottoms of the plants and allowed to travel upwards to the roots and stems through capillary action. Because it does not require a lot of space, this type of irrigation system is often used in urban settings or high-rise buildings.

A sub-irrigation system is essentially a series of pipes and drip emitters buried beneath a plant's growing medium.  Water is pumped to the bottom of the container where roots find and uptake it. This is opposed to traditional overhead watering systems where water is applied to the tops of roots, and flows downwards.  Greenhouse flood benches can be labor-saving while encouraging both water and nutrient conservation because water doesn't leach out of the container or planting box. Additionally, because plants receive water directly through their roots, this type of irrigation system using greenhouse ebb and flow benches prevents powdery mildew and other forms of diseases that form when the stems or leaves of the plants are overly exposed to water.

MAD Greenhouse products supplies a variety of different styles and configurations of flood benches for small or large installations.  Whether you are redesigning an existing greenhouse or building a new greenhouse from the ground up, order what you know you need or contact us to lend support in configuring the best custom solution for your operation.
  • 16ga Galvanized steel legs, headers, frames
  • Heavy marine grade aluminum rails, corners, leg connectors
  • 4” High aluminum side rail
  • All parts pre-drilled for easy assembly with included fasteners
  • 1” high UV coated, vacuum formed polystyrene trays
  • Ebb and Flow Trays hold roughly ½ gallon of water per square foot
  • Leveling headers at the top of each leg with 2 1/2" of adjustment
  • Benches are designed to be perfectly level
  • Tray inserts (vacuum formed polystyrene) have drainage channels and plumbing wells to ensure complete drainage of irrigation water from the crop when the irrigation cycle is done
  • When crops require watering, the irrigation solution is pumped into the bench and then allowed to drain where it is returned to the holding tank to be re-used
  • From start of irrigation cycle to complete drain of full irrigation (about ¾” of water) takes approximately 20 mins.
  • It is during the filling of the irrigation cycle that the capillary action within the plant root media takes up the irrigation solution
  • Is any slope needed?  No.  That would result in uneven watering.
  • Can they be any length?  Yes, but over 60 feet in length will most likely require the tray tops to be spliced in two or more sections.
  • Can I convert my current standard grow bench to an ebb and flow bench?  Absolutely!  All you need are ebb and flow trays sized to fit your current grow bench.
  • At what point is the height of the bench measured?  We measure to the table top where the plant actually sits.
  • Are the bench legs adjustable to account for uneven or sloped floors?  Yes.  There are leveling headers at the top of each leg with 2 1/2" of adjustment.
  • What is the difference between a "Standard" rolling base and a "MAX" rolling base?  Both are rolling benches but the MAX rolling bench will extend up to 43% of the width of the table dimension while a Standard rolling bench only extends up to 32% of the width of the table dimension.  See a side-by-side comparison chart under the Product Files tab.
  • Are all widths available for each base option?  No.  The Ebb & Flow Rolling Benches have a minimum width of 4'.
  • What is the best way to clean the Ebb & Flow tables?  Use our 100% natural, plant-based EBB-N-FLOW table and tray cleaner.

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