Holes in kleiner bar sword plantlet leaves

• pH:
• Temp:
• KH:
• GH:
• NH4:
• NO2:
• NO3:
• PO4:
• Iron:
• Dosing: 30 mL Excel, 2 tsp CaSO4, 1 tsp MgSO4, 2.4 ppm PO4, 6 ppm K, 18.75 ppm NO3
• NO3:PO4 Cumulative Dosing Ratio:

Notes:
50% water change:
20 mL Amquel+
30 mL Excel
2 (slightly under) tsp CaSO4
1 (slightly over) tsp MgSO4
2.5 tsp baking soda
2.4 ppm PO4
18.75 ppm NO3
6 ppm K

Green water still persists. Noticed holes in the kleiner bar sword plantlets, does not look like nutrient holes, since they are many and irregular, and the leaf is otherwise very healthy. Perhaps the large snails that the loaches aren't picking off are eating holes in the leaves? Otherwise, the clown loaches are doing a good job at demolishing the small snails.

Adding some K during water change, since it seems that not enough is being added from the KNO3 and the KH2PO4 at the water change, although enough seems to be added by the cumulative dosing at the end of the week.