Ok dime, I think I have figured out some things for you to try.
1. I have been typically changing between 20 and 50% of my tanks volume with every change and change water about every ten days. Try to change 20-30% every week. I suspect some of your problem is not making a large enough water change, especially if your trates have been 20 or more, this is still too high and will promote nuscance algae growth.
2. Change the filter pad every two weeks.
3. Your fuge light may be partially to blame, it looks really yellow in your picture and may be contributing to your algae growth if it is too close to the red spectrum. I have been trying to find a pic of the bulb I bought from Home Depot. It is a spiral, single end PC with a kelvin rating of 6500, It was the only one with that high of a rating and I think it was around 9W. It gives off a much whiter light.
All the rest of your perams look ok.