Presence of plants in traps
The trap may contain plants such as lucky bamboo.
Small pots filled with soil and plants such as papyrus may be drowned in the pond.
Always control that plants do not take more than third of the surface of the trap because fishes must be able to see each other easily.
Floating plants may also be part of the “decoration” but you must never introduce plants such as “duckweeds”; if there are too much duckweeds in the trap, mosquitoes will not lay their eggs finding the trap not very suitable for. These types of plants also hamper grubs to breathe normally, because the latter breathe at the surface.
Small water lilies may also be placed into the trap, but be sure that they don’t become too big and thus monopolized all the surface of the trap.
Be careful of invasive seaweeds
Each time you introduce fishes, plants or aquatic snails in a pond, always control their origin and that they are not carriers of any filamentous seaweeds which could harm the good balance of the system.