Okay - that tells me you have under 1wpg, so this is an extremely low light tank, which will make it very hard to grow plants, for the most part. I think your algae problems are the result of fertilizer overdosing, because at that low light you should not have much of a problem at all with algae, except perhaps the brown diatoms. The plants are not going to be able to grow vigorously enough to use ferts, so you can discontinue that for the time being and let the fish provide the nutrients the plants need.
I have grown plants in super low light like this, but you need to stick with plants like java fern, java moss, anubias sp. and cryptocoryne sp. The crypts will live in this low light and grow some, but don't expect a lot of growth, at least that is how it has worked out in my tank. I do not do anything to this tank at all but weekly water changes, and that's it. No ferts, no fuss, no muss.
You probably ought to swap out the bulb for a 6500K (or higher) rated bulb and see if that helps. The only other option would be to replace the fixture (or retrofit it) with higher wattage. What kind of plants do you have, if any?