Ive got a 20gallon tank with 130wattcoralife cf. DIY CO2 and i use kent marine liquid fertilizers 0-0-3 i beleive it is. As of lately it seems my plants are kind of turning a yellow color. I know this is normal for some of the types of have but my amazon swoards and green cabomba seem to be also fading. Any one have any guesses on why this is, or am i just being parnoid.