Sick plant

[captainGregor]

Can anyone advise on what is going wrong for my sword plant?
Here is a picture.

[William]

Hrm... Looks like a combination of not enoughlighting or/and poor conditions and maybe some snail nibbling.. could be wrong, tho.

This is the 55gal tank you have in your sig? how much wattage do you have in lights on it? and what type of lights?

[captainGregor]

William, I only have 2 piteful 18" 15 watts standard issue bulbs. Most likely it is not enough light in there for that sword. Yes, this is the 55 in the signature.

Almost definitely the lighting. Sword plantare also heavy root feeders, which would require root tabs or jobes fert. sticks, but do NOT do that unless you upgrade the lighting. The sword cant' use ferts if other conditions aren't right (the lighing, in this case).