Why are my plants still dieing? I got finnex planted 24/7 LED lights 3 days ago. I also have been dosing with API Plant Grow (?) liquid fert. Temp at 78. (55 gal). Some plants are doing good (anubias, sword, etc). But my hornwort I just bought is still turning brown. How can I save my plants!? I have most of my hornwort floating, they should be getting enough light now! Thanks!