Can aquarium plants replace filtration systems?

Aquarium plants play a role in the process of biological filtration. Still, they do not replace a mechanical filter. While plants absorb most of the nitrates and ammonia waste in the water, they can't remove the physical debris. To work in conjunction with a filter is the ideal situation, resulting in the most comprehensive water purification system.

Plants are very good at absorbing nutrients from water, and they receive ammonia directly through their roots. The leaves use nitrates in photosynthesis, which helps keep the growth of algae to a minimum. All uneaten food and waste from fish must be mechanically removed, as it will otherwise remain in the water. A filter will do this quite nicely.

Combine principles from both systems. Select fast-growing stem plants for maximum nutrient uptake (e.g., Hornwort). Combine with these a sponge filter, which will remove as much mechanical debris as the plants. This dual-pronged approach will always result in crystal-clear water and is the most suitable for housing fish at a higher capacity.

Check water parameters weekly. Test ammonia, nitrite, and nitrate levels as it is preferred. If readings increase, you will need to adjust the plant density. Clean mechanical filters monthly. This is a balanced ecosystem to promote healthy fish. You are decreasing maintenance frequency while improving tank stability.

Read the full article: 15 Essential Aquarium Plant Types for Beginners