G&B Aquaponics Floating Pond Planter Basket Kit - Hydroponic Island Gardens Features DIY floating plant baskets make planting and maintenance easy, especially for ponds that don't have adequate plant shelves. They provide excellent soil containment and protect plants from fish. The buoyant PVC float ensures that the baskets stay at the surface. The plant baskets also provide shade and protection for fish. Measures 2-1/2-inch diameter.