What's the best chemicals to use to feed my freshwater aquarium plants?

I have a 150 gallon tank. I just bought some java ferns, swords, and anubias.

What's the best chemicals to use to feed my freshwater aquarium plants?
With those plants, I wouldn't worry about fertilising. They are VERY hardy and will do just fine without it. However, if you feel it's necessary or would be immensely beneficial in some way (it won't be unless you have other, more difficult plants), I would strongly recommend Flourish, as it provides a concentrated solution of essential macro and micronutrients that plants need. If you want to get a bit more advanced, I would also use Flourish Excel.
Reply:Hi,





Try this, i have one myself, and it keeps the plants happy feeds them and they grow well.





http://cgi.ebay.co.uk/NUTRAFIN-CO2-AQUAT...





I hope i helped :)
Reply:a few drops of liquid per week urea is good for your plants