If left unchecked, aquatic weeds will turn out to be real troublesome. They will in but a short time 'conquer' the fish pond and take root such as to make them quite difficult to remove. Amongst the initiatives often taken to take away the problem of these pond weeds and such like life, we often have the pond maintenance and filtration initiatives which are nonetheless not entirely conclusive in addressing these aquatic weeds as by and by, the weeds will get returning to the pond in thriving life. There are three common methods of weed removal and these are the biological methods, the chemical methods and the mechanical methods and these are all coming with their advantages and disadvantages but when each is used with a degree of wisdom, you can be assured of success in your efforts to do away with weeds in the aquatic life.
The mechanical method is largely regarded as the most cost-efficient of the three though it comes with a certain degree of time consumption. Weeds and nuisance algae will always thrive in your pond all due to the availability of excess nutrients in the water. This can be comfortably addressed when you allow a large water exchange which will be backed by some manual labor. Algae and weeds scrubbed from the substrate will also be removed easily by the use of a mechanical filter. Replacement and cleaning of the filter mats is another step which one should consider to have done after they have the cleaning completed as a step to keep them from returning. Read https://www.reference.com/pets-animals/should-water-temperature-aquarium-58e57384a3209c0e to understand more about aquariums.
Algaecides and herbicides will be the other alternative option for the removal of algae and weeds form your pond as we've mentioned in the above sections, and is the chemical means of water weed removal. It only has an undoing in the complications that it is always associated with though it generally has its reputation as being the most quick and effective means of weed removal. The algaecides and herbicides at times contain harsh chemicals which may have a serious effects on the other useful elements of the aquatic life like the plants, other invertebrates making the eco-system habitable and even the fish life in the 40 litre fish tank.
Added to the effects on your fish life, plant life and the invertebrates in your pond, the chemicals will also have a negative impact on your biological filters. The chemicals will have the sum effect of causing the death of the good bacteria on the biological filters which are often sensitive to them and this is going to result in negating the whole efforts in the entire plan as with the good bacteria dead in the biological filters and will thus lead to excess nutrients once more attracting the algae and weeds all again. Get more information here!