From: Patio Growing : Growbag Growing
These Grow Bag Waterers will make watering plants in grow bags easy and efficient. Simple to fit into your grow bag, they provide you with a reinforced point in your grow bag where you can water or feed without the possibility of any compost being washed away.
The top of the Waterer has a removable mesh lid, preventing debris falling in yet letting you add water. The base of the Waterer is designed to allow water to seep steadily into your grow bag, so water and feed are evenly distributed into the bag.
Robust, reusable waterers - designed to make watering easy and efficient.
Quick watering - they let you water your plants quickly without having to worry about wastage or disturbing the compost.
Even water distribution - you water in one place and the Grow Bag Waterer ensures the water is distributed evenly throughout a bigger area within the grow bag.
Size approximately: 3" (7.5cm) diameter x 2¼" (6cm) deep.