I can't comment to that brand specifically, but when I've used soaker hoses in the past, I've noticed their performance changes over time… I don't know if they plug up on the inside, or need a breaking-in period, or what? Maybe give it a week or two use to see if it improves? Also, I've had success burying the soaker hose to a degree (yes, I know the instructions say not to). I used one to keep a specific bed watered, and used Pine Bark Mulch in that bed (coarser and less prone to breaking-down IMO), and covering the hose with that worked well.