Water change
Week 1 – 3: Replace ≈ 50% once a week to flush out any initial cloudiness.
From week 4: ≈ 25% per week is sufficient.

fertilization
Since there are no plants, no additional nutrients are required. Humic substances are provided by the foliage; they stabilize the pH and protect the mucous membranes of future animals.

Current & Oxygen
Set the Corner Filter 100 to maximum performance. Make sure the outlet remains clear; check the sponge every two weeks and rinse it in the aquarium's own water to avoid throttling the flow.

Decor care
Sea almond leaves and alder cones can remain in the basin until they are visibly decomposed; then simply replace them. This ensures a continuous supply of humic acids – just like in a natural riverbed.

Light
Although photosynthesis does not need to take place, we recommend moderate lighting (6 h) so that the stone build-up can be easily observed and biofilm can form more easily for future filter feeders.