Hmm, I cant get a positive ID on it from those pics, but they definitely help. Here's my recommendations for you.
I've found Excel to be a great product in the algae war. Long term, it would be unpractical to use to fight algae, but it can act as a reset button for when you try something else. I'm not sure where you're from, but if you're from Europe, I think the product you have will be called Procarb. It's a shortcut, sure, but it will help.
Second, however much you're dosing, cut it in half. I get hair algae in my tanks when I OD on nutrients (like when my autodoser malfunctioned and dosed a weeks worth of ferts in my tank when I was on vacation). How much of that solution are you adding per day and per week? I suspect that excess fert levels might be your issue. I would probably do a 50% water change and stop dosing everything for 2-3 days (sooner if you see deficiency issues), and then start dosing again. We need to know the volume you're adding to make sure that it's withing normal parameters.
I would recommend pushing up your CO2 levels, but without a drop checker, that could get hairy. They're like $10 on ebay and are definitely worth it. You might try edging up your CO2 slowly, but watch for signs of distress in your fish (panting, erratic swimming, swiming at the top of the tank). This will also head off BBA if that's your problem. Excel will help kill brush algae as well.
