After installing four - 3'
"After installing four - 3' x 10' grids in my raised vegetable beds, I was sold on the product. Watering is much more thorough and actually uses less water than my previous system(s). I've tried soaker hoses, drip irrigation, sprinklers and hoses. I have since been adding more grids to all parts of my yard (1/2 acre) and am very impressed with the quality, versatility, and effective use of less water. I hope they last years! Great product. One last thing, I love that I can also purchase replacement parts, not that the system has failed in any way. I have made a few minor configuration changes to (for example) go around a corner for an L-shaped flower garden. Wonderful product."
