Betta Floating Pond Plant Basket Holder is for use with YD010 Betta Small Square 19cm Pond Plant Basket (not included). These holders are suitable for use with a wide variety of marginal type pond plants including Iris's, Marsh Marigolds, and Watercress. They can be used in any type of pond, but they are especially useful in places where there are no marginal shelves present (such as Koi ponds).