Aquatic compost for pond plants

Compost

Although many composts state that they are 'multi-purpose', compost used for terrestrial plants is not suitable for aquatic planting. As the compost will be completely saturated, there is no need for water retention ingredients such as peat, or drainage materials like sharp sand which are added to multi-purpose composts.
Aquatic compost consists of loam which is the primary need of aquatic plants and proprietary brands are simply that. You may have this already in your garden if you have for example, stripped turf and left it to rot for a few months. Good top soil can also be used if it is a heavy loam, but you must be sure that it has not had any chemicals applied to it in the last six months as obviously this would have a detrimental effect on your pond and it's inhabitants.