Can an aquarium be planted too densely?
Is it possible to have too many plants in an aquarium?
this is virtually impossible, provided the fish have sufficient space left to move!
It is important to fulfill the nutritional requirements in very densely planted tanks. Depending on the plant species, strong light as well as appropriate fertilization with minerals/trace elements, CO2 and often even additional fertilization with nitrogen and phosphorus compounds is usually required!
Dr. Bodo Schnell