Hello all. Wondering if someone could help identify the issue with my Tropica Echinodorus 'Rubin' (rather poor photo below). As you can see the leaves have light patches on them, particularly along the outside edges. Growth is quite fast given I don't really have enough light for it. This is a child plant from the original which grew huge before dying off some time ago. Crypts and vallis are growing like mad, as is Hygro and my lilies. I've noticed that new leaves on my 'normal' swords tend to be red veined and sometimes look slightly twisted.
Tank is 180L Juwel Rio with 2x30w with reflectors (1.5wpg) and DIY CO2. Have been dosing lowish levels of Kent Freshwater + Pro but also have dry ferts available. Water is RO reconstituted with CaSO4, MgSO4, NaHCO3 and KHCO3 to GH/KH 5. NO3 20ppm, PO4 2ppm, Ca 40ppm, Fe 0.05ppm. Moderately high livestock levels including Amano shrimp.
Any suggestions appreciated.
Jerry

Tank is 180L Juwel Rio with 2x30w with reflectors (1.5wpg) and DIY CO2. Have been dosing lowish levels of Kent Freshwater + Pro but also have dry ferts available. Water is RO reconstituted with CaSO4, MgSO4, NaHCO3 and KHCO3 to GH/KH 5. NO3 20ppm, PO4 2ppm, Ca 40ppm, Fe 0.05ppm. Moderately high livestock levels including Amano shrimp.
Any suggestions appreciated.
Jerry