This complete fertilizer tablet provides water lilies and other blooming aquatic plants that take up their nutrients mainly through the roots with all important minerals and trace elements for a healthy and colorful growth Special stabilizers make sure the nutrients, in particular iron,remain available for the plants for a long time. sera pond florenette Tabs do not contain any nitrate nor phosphate.The combination of sera pond florena concentrate and sera pond florenette Tabs is perfectly balanced and fulfills all requirements of the different aquatic plant species.