http://forum.aqua-fish.net/ A forum devoted to aquarium fish, plants, techniques and fish keeping as a whole. en http://forum.aqua-fish.net/?topic=plants-turning-to-yellow#1 I have a freshwater aquarium with angelfish and I don’t know why my plants are turning all yellow. Can anyone suggest as what seems to be the problem here. KATE original post: March 15, 2007, 8:26 am anonymous 2008-05-02 http://forum.aqua-fish.net/?topic=plants-turning-to-yellow#2 You must fertilize your plants. You dont have enough iron in water. Try use some fertilizer. For example PMDD. Wampa 2008-05-02 http://forum.aqua-fish.net/?topic=plants-turning-to-yellow#3 Hi Kate. The main problem I guess is of aquarium lighting here. Either the photoperiod is less or the lights are not properly placed. Peter anonymous 2008-05-02 http://forum.aqua-fish.net/?topic=plants-turning-to-yellow#4 Kate write more informations about your tank. Wampa 2008-05-02 http://forum.aqua-fish.net/?topic=plants-turning-to-yellow#5 Hi Peter and Wampa. Which details are you looking for? My tank is: 50x40x40 cm; 20W neon lighting; 4 angelfish; 2 catfish; lots of vallisneria plants. Is that all? TY , Kate anonymous 2008-05-02 http://forum.aqua-fish.net/?topic=plants-turning-to-yellow#6 Hi, Now I agree with Peter. I think your light intensity is low. You need 40 W of light. And lenght of light time period 10-12 hours. Wampa Wampa 2008-05-02 http://forum.aqua-fish.net/?topic=plants-turning-to-yellow#7 I have an odd problem, some plants are fine, but some plants are yellow, and some are both! any suggestions? egg131313 2008-05-02 http://forum.aqua-fish.net/?topic=plants-turning-to-yellow#8 It happens because different plants demand different conditions. This might be the light, but pH, or dKH levels as well. At old ages I kept various plants species in my tanks but as time went by some of them died, some of them adapted and grow larger. It would be nice to hear which plants species you’re talking about . Then my suggestions would be more wise. jan 2008-05-02