Well mistergreen I guess I should have mentioned that I have two HO T5 bulbs over my tank for a total of 50 watts, unfortunately I have no reflectors, but I plan on correcting that soon. As for CO2 I have two DIY bottles running, both producing around 25 bubbles a minute. I am in need of an effective means of diffusing the CO2 into my tank however, but I will be fixing that soon when I build my Barr internal venturi reactor. I tend to think my lighting isn't really the issue, since I don't have much wattage over my tank.
As for the nutrient monitoring you are correct, I honestly am a little confused on the whole fertilizer dosing and monitoring subject. I have a KH, GH, PH, Nitrite, Nitrate, and Ammonia test kit. I don't have any nitrite or ammonia, My PH is 7.4 and my KH is 150 mg/L(according to the book that came with the test kit, mg/L = PPM, is that correct?) As for the GH, it's been awhile since I tested it. I just bought my nitrate kit today and have yet to test it, since I just did a 75% water change.
But I am seriously thinking my Bio load is simply too heavy for the amount of plants I have and it is leaving a lot of excess nitrate in the water column. I am sure the root of the problem has something to do with the changes I made, everything was progressing smoothly prior to the changes.