Is this normal looking Needle Leaf ludwigia or deficiency?
The Needle leaf I bought at Pets Mart looked totally different when young. I am guessing it was grown out of water , because the leaves looked much smaller when they were first bought. The Needle Leaf is growing crazy. Starting to take over the tank. They were looking more greener months back, now they are taking on yellowish reddish , brown rust looking pigments near the tops. The only thing I am not sure about is the way they are looking more yellow light green through most of the plant until the top 1/3. Is this normal?
Ph is 7.3-6.8, Gh 7, Kh4, NO3 15-20ppm, PO4 1ppm. I do not test Fe since I do not have an Fe kit. I dose EI , but not exactly because my NO3 has been high & I cut back on NO3 to lower it to 15-20ppms. I dose extra (K, Mg) I dose trace & Fe. Fe every day 3-5 drops. I use 80%R/O remineralized with GH booster& extra trace. Tank temp is 76.6 I dose pressurized CO2 1-2 bubbles a second , 2x 15 watts T8 bulbs 11 hours a day.
To me they are either normal or Fe deficient maybe Mg as well. I have seen rusty looking ones on the computer that the owner purposely denied NO3 to make them more red. What do you think? Could there be too much of a nutrient to make the Fe not available? Or are they normal?