Originally Posted by Mike_
Recommended is 1ml per 10l and I do 2ml
So roughly 80ml 2 x a week
If you are not familiar with the Estimative Index (EI) it is supposed to provide unlimited nutrition in a high light tank. The targets are:
Nitrogen (from potassium nitrate KNO3) = 7.5ppm
Phosphate (prom potassium phosphate KH2PO4) = 0.3ppm
Iron = 0.2ppm
You are supposed to dose these 3x per week then do a 50% water change on the 7th day.
Rotala butterfly nutrient calculator uses Iron (Fe
) as a dosing guide for the Estimative Index when you select TNC complete.
As you can see you need to dose 100ml of TNC complete in a 400l tank to reach 0.2ppm Iron (Fe
) but this only provides 3.75ppm of nitrogen. Nitrogen is what the plants need most so this is something to he aware of. Itís also mobile within the plant so should improve pale leaves, along with iron and magnesium.
With that said I donít believe this is a nutrient issue given the substrate you are using and your current dosing. The translucency of the sword plants suggest a co2
issue. Try putting the co2
on another hour earlier. Then take it from there.
Also be sure to only focus on new growth for the time being. Old growth can be deceiving.
Lastly, make sure your flow rates and patterns are good enough to push the co2
infused water around to all of the plants.
When turning the co2
on earlier be sure to observe the live stock throughout and improve surface agitation.
Also note, new planted tanks go through a phase of disappointment almost inevitably. This is still a new tank. Perseverance is key. Once the biofilter stabilises, things will click in to place and things will start growing.