Welcome to the Bunnings Workshop community. Thank you so much for joining us and sharing your question about how to fix an existing watering system.
I'm sorry to hear that your watering system is not working out. Would it be possible for you to post a few photos of your current setup? This will allow our members to have a better understanding of your layout and will let us provide you with a comprehensive recommendation.
Please keep us updated, we look forward to seeing the photos.