acidburn470 said:
All water parameters are fine except for nitrates which are at 40 and slowly going down
Howdy acidburn470,
It's always hard to evaluate values when you say they "are fine".... If you recently measured then, posting the actual values might help us a bit more. Again:
pH, iron, phosphates, also hardness (kH, gH). Measure iron before you fertilize and 30 min after. Both values will be of importance. Your levels of nitrates are not the problem for plants dying.
acidburn470 said:
The bulbs are still pretty new less than a month old. What does sohatfish mean by new plants tend to melt? My plants are pretty new they have been in there for maybe a month on the outside.
I just realized this:
What was first: The new light or the plants? Looks like the plants were. Did they go downhill since you got a new light? Any observations, any changes that co-incided with the start of the plant decay???
acidburn470 said:
the plants are a amazon sword tail and a broad leaf something that I cant remeber I'll look it up online. The plants were bought at PetCo from the funky tube things which I dont know if that could be a problem. I did that cause I was told it was the best way to avoid getting snails.
I assume you mean Amazon sword plants. Sword tails are fish

Anyhow, these are pretty hardy even under marginal light conditions. You're absolutely right that you will prevent snail invasions when you buy the "tube things". But, as sohfatfish said earlier, these were cultivated outside the water and might decay at first when they are submerged. However, it's been a month now, if I understand you correctly.
By now, you should see fresh growth! Are there any new leaves??
Bottom line:
I need your water chemistry data before I can say anything else. Post it, and we'll be more likely to be able to help. Also: What filtration do you have?
Do you use carbon filters? If so: Throw them out, they adsorb plant nutrients! And:
What substrate are you using, what fertilizer (brand), and in what intervals do you add it??
Please think thoroughly about my questions and let us know. I am sure We'll get to the bottom of your problem, we just need to know all details.
HarleyK