What could be the cause this ? It appeared on older leaves.
Photos can be posted if needed.
Can the black mark be reversed? ( turn back green ). Plants looks/seems healthy ( growing new leaf)
FYI, Misc' known informations:
- non-CO2 10gallons US tank lite with 15watt 8 hours a day
- filtration HOB aquaclear 30? + water pump for extra flow. (water circulation look good IMO)
- Kh = 5 (adjusted with baking soda), Gh = 2, pH = 7.1
- inhabitants: red cheery shrimps, amano shrimp, otocinclus
Photos can be posted if needed.
Can the black mark be reversed? ( turn back green ). Plants looks/seems healthy ( growing new leaf)
FYI, Misc' known informations:
- non-CO2 10gallons US tank lite with 15watt 8 hours a day
- filtration HOB aquaclear 30? + water pump for extra flow. (water circulation look good IMO)
- Kh = 5 (adjusted with baking soda), Gh = 2, pH = 7.1
- inhabitants: red cheery shrimps, amano shrimp, otocinclus