In the last month my plants stopped growing.
Instead of trimming once a week I need to trim once every 3/4 weeks.
Here some details about my nano tank:
- 30 l
- ADA new Amazzonia soil
- light 26W (~1W/l)
ADA Fertilizers protocol:
- Brighty K every day
- During the first year I used Step 1 every day (now only 2 times / week)
- Last week I begun using Step 2 daily
- I also started using Special Light (twice/week)
I change 20% of water weekly (using tap water ph7/kh4/cond200).
I noticed this issue since I replaced my CO2 diffuser from a wood diffuser to the JBL Taifun, in the same period I didn't have the time to look after the tank well enough (for a month) leaving it without CO2 and without supplying the fertilizers as scheduled.
I'm using a DIY CO2 system (yeast based).
I only have sakura red shrimps that breed with no issue.
Current water parameters:
* PH: 7
* Kh: 7
* Cond: ~500 ms
* NO2: 0
* NO3: 20
* NH4: 0
* temp: 25'C
I do not have reagents to test GH or phosphates (yet).
I read that plants can stop growing if there is lack of iron or some other element.
I'm not really sure if this is the case and I need help to understand how to troubleshoot and to fix this.
I noticed that a brand new Anubias leaf grown with a small hole on it, is it an indication of iron lack?