I set up a tank approx. 4 weeks ago, it is a 12 gallon JBJ Nano Cube Deluxe with 2, 24 watt 6700k bulbs and I am running a Nutrafin co2 kit. The tank is planted with java moss, Anubias nana petite, Mayaca fluvitalis, micro sword, a dwarf lily (nymphea stellata I think), and Glossostigma. pH is 6.8, KH is 3.5. Ammonia, nitrites, and nitrates don't register when I test for them. There are 4 neon tetras, 5 Rasbora heteramorpha, 3 kuhlii loaches, and 7 Amano shrimp in the tank.
Ok, now for the weirdness, all the plants seem to be doing great, especially since I got the cyanobacteria outbreak under control that hit the tank 4 or 5 days after the plants went in. But the Glossostigma, even though it is growing like crazy and staying nice and horizontal, has started changing colors. The veins on the leaves are all turning white, which while not unattractive, seems a bit odd to me. Some of the newest growth has even started off completely white taking a few days to get any green coloration at all. What the heck is causing this?