fishenthusiast
Aquarium Advice Addict
I think it's narrow Java too. Not positive I got it so long ago. It just keeps growing. I have it in all my tanks.
For ferts I made the DIY Osmocoat + root tabs. I dose 1/2 ML Flourish 2x a week with a few drops of Potassium. Fish provide most of the ferts. Lol. It's all I can do to keep my nitrates a hair under 40.
To me, it looks like Needle Leaf. They are hard to differentiate though. I'm starting to think that I have a mix of Needle and Narrow in my tank. Regardless, both are great plants and it makes little difference! Tank is looking nice.