You are burning way to much light on that tank buddy, see the tank in my sig, that is a 29g with 65w, I can not imagine running two x's that, the first pic is a definate sign that C02 is not good enough for the light burned.
You need a glass diffuser, but they do take a little getting use too.
Vacuum out what you can, burn only 65w on that tank, no more than 8hrs a day for a few weeks, dose Excel for next couple of weeks, and keep dosing what you are, you have a C02 problem not a fert problem.
After the tank is running good again and back in shape, you can burn 65x2 for a couple hours a day, that is about it, pay attention to the plants, they will tell you if you learn to read them.
Once or twice a week, I will throw a 192w fixture on this tank only for an hour or two, talk about blasting the plants, they love it, but the tank has to be in shape, and C02 has to be good.
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