what happened here?

[timwag2001]

did i not dose enough? dose too much?
you see at the top of my anacharis there is and inch of green and an inch of brown. whats up with that?

 

[CrazyPlantLady]

You'll need to trim off all that is brown. It's "usually" (but not always) caused by being shaded too much. If it is left in, it will rot and foul your water.

 

[timwag2001]

i can't say that it's from being shaded too much as it's right at the top of the water. too much light?

 

[CrazyPlantLady]

Your photos show it just under the much greener and denser tops. How much/what type of light do you have?

 

[timwag2001]

hagen dual t5 54 watts.

1.96 watts per gallon.

 

[timwag2001]

it looks brown in the pic. but i think that it looks more red than anything

 

[CrazyPlantLady]

Egeria densa is the scientific name I believe.

I used to grow it under 3.75 & 2.5 wpg with no problems (don't anymore, it grew way too fast). Its a nutrient hog so good to prevent algae especially when starting an aquarium. I've never had it turn brown on me except when I put it in a fry grow-out tank that had less than 1 wpg. When I researched it, the literature I found was that the brown section was being shaded too much.

Perhaps I had a different variety, but mine never turned red at all, even floating under the highest lighting I have.

 

[timwag2001]

it was sold to me as anacharis najas (which i guess is Egeria najas)
it grows like CRAZY!!! i cant figure out why it turned colors like that. i'm also having other problems in my tank which is suggested could be a potassium deficiency. here are some pics of that http://www.aquariumadvice.com/forums/f24/whats-wrong-with-this-plant-115955.html
maybe related?

 

[fort384]

If it is reddish in color, that could be a sign of nitrogen deficiency. That stuff will soak up nutrients quick. What is your N testing at?