Comment by Peter on November 14, 2012 at 11:38pm

http://fishtanktv.com/photo/plants-defiencys?context=user#!/photo/plants-defiencys?context=user

Comment by DePreston on November 16, 2012 at 9:02pm

That showed about everything that can go wrong with plants except what causes the tips to go brown.

Comment by Uncle Phil on November 17, 2012 at 3:23am

Is it a sword? My sword always gets brown tips, when it spreads to the whole leaf, i trim it. I've always had low light, witch is what i'm guessing the problem is.

Comment by DePreston on November 17, 2012 at 9:08pm

I have 2-48 inch 6500k flourscent T8's on a 90 gallon tank, seems plenty bright to me, tomorrow I am going to trim all the brown edges of the plants, put more fertilizer and check the chemistry of the water.  I have a new Marineland 503 canister filter coming next week, can't hurt.  I put in a new home made co2 generator in last weekend, that might help too.

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