What are you dosing? Also if you want you can explain why you are as I have found that that can actually help find out your problems by what the plants are showing. So the lack of red is an iron deficiency, so if you are dosing iron, dose more.
Also, with ferts, especially Seachem products and you have moderate lighting you may need to dose more then once a week. My 5.5 gets dosed pretty much every other day with something, I can give you my schedule, but you may need to adjust it. Also slowly increase the amount of ferts dosed, you dump it all in throughout the week the plants might not be used to the excess and may still be limited by the ferts.
I like to use some of my plants as iron indicators. These plants will show color with lots of iron. My hygrophila "sunset" (The scientific name is Polysperma) and that will become super pink, it is lovely. So finding an iron indicator, like the lily will help you alter your dosing. As well, if you find that recommended dosing is not enough, trust me you can dose some more, but again you need to adjust slowly and I wouldn't go up to 2.5x, I go up to 2x as much sometimes which is safe as long as the fish are adjust to these changes, some might be more sensitive.
Last edited by kfryman; 01-02-2013 at 02:44 AM.