01-24-2013, 04:43 PM
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I would. A dying leaf won't regenerate, so it's best to prune them off, which will allow the plant to dedicate it's energy into producing new leaves, and caring for the remaining healthy ones.
It might be that it isn't getting enough light. I have Ludwigia in a tank with lower lighting, it's growing - but it has lost the majority of it's red/purple hues, and is now mostly green.Whatever this plant it is, the red coloration on the leaves *usually* implies that the plant is used to high-lighting. (some plants are able to adapt themselves to high light conditions by changing the hue of their leaves to a color, like red or purple, that doesn't photosynthesize as efficiently, thus keeping them from getting too much light) If your light isn't bright enough, it may take some time and the loss of many or all of the old leaves as it adapts to the new lighting.
The same applies to to water parameters in your tank (provided that the lighting is right for it in the first place). Many new-to-you plants will go through a process where the older leaves that were used to different conditions will die off, and be replaced with new. Also, if this is one of the TopFin tube plants, it has been out of the water for some time. I'm not sure how these work (never got 'em), but if a plant has been grown out of water, it often sheds all of it's leaves and takes on it's underwater form.
So. . . it's kind of going to be a watch-and-see thing with this one, I think - but yes. Always prune of the dead/dying leaves :)
ETA: You're adding plant food every day? You might want to look into this. I'm not familiar with this brand of plant food, and if it has all of the required nutrition that the plant needs to thrive without going overboard and adding too much - which could lead to an algae problem. I give my plants Flourish Comprehensive by Flourish 1-2 times weekly, and they thrive. . . something you might want to do more research into. :D HTH!
Last edited by Chesh; 01-24-2013 at 04:45 PM..