The tap water has an extremely high silicate content. After talking in Aquaristikladen an even higher silicate content is obvious only in Hamburg to measure (in accordance with the locations of Megazoo).
Because of this, 50 percent water changes during the week are excluded because the diatoms otherwise overdraw my plants and stones brownish.
The use of SilikatEx of JBL in the filter I had to stop, unfortunately, because of the hardness value within hours of 6 to 4 ° d was lowered.
On the use of osmosis systems with silicate filters I want to do without. For silicate consumption I have something Egeria densa introduced.
Water change now takes place every 14 days about 30 percent. A higher fish stocking density is now not "more" sought by me.
By far 50 percent water change due to green algae I manured in the subsequent period with the Nano Daily Fertilizer from Dennerle.
Now I ask again to the DENNERLE fertilization system: E15, V30 and additional administration of S7 and PlantaGold 7. From the S7 and the PlantaGold 7 I expect that my plants get fed the necessary macronutrients to a sufficient extent.