Two problems: The tank is not cycled, so you don't have a full colony of bacteria converting the ammonia to nitrates. That is a serious problem for the fish.
And, you have way too much light for a planted tank, even with good CO2. The T5HO light is giving you about 30-60 PAR, depending on the specific light fixture you have. The LEDs are very likely giving you about the same PAR, which means you probably have at least 60 PAR, and possibly twice that. Eleven hours would be too long a photoperiod even if you had half that light. You don't mention doing any fertilizing, but to use that much light you probably do need to be dosing NPK and trace elements. You may have enough CO2, but you will have to watch the plants to be sure.
With some more information about what specific lighting you have it should be possible to figure out more accurately what light intensity you have. Then we can do a better job determining what kind of fertilizing would be appropriate. But, to do that, we also need to know what specific plants you have.
If the plants are growing fast now the lack of cycling might not be a serious problem, since the plants do use nitrite and ammonia as a source of nitrogen. If you dose the tank with Seachem Prime you may also be able to neutralize the ammonia in the water, and the cycling can continue without harming the fish too much. I would do a 50% water change every day for a week or longer to be sure.