[ramki]

As you can see my red plants are now turning transparent, java fern is nearly dead. What could be the reason? Any tips on saving them will be great.. I keep the lights on for 8 hours. No co2. Adding fertz though...

 

[Plinkploop]

Did you bury the this one of the java fern? That could be the problem with that one. The others are probably not getting adequate nutrients/ lighting. Red plants tend to be tougher without co2.