[Hcancino]

I have a 60 gallon
48" T5HO 2 54 watt bulbs 8 hour light period
Flourish once a week
Flourish excel 10mL daily
Flourish trace twice a week
NO3 - 0
NO2 - 0
NH3/NH4 - 0
pH - 8

I currently started dosing flourish nitrogen and that's the only macro im dosing for.

The problem is this

 

[mistergreen]

Too much light for what you're putting into it, ferts & carbon.
Reduce the lights or add way more NPK, micro and CO2.

Please check out our articles on planted tanks.

 

[Abrium]

yeah, the top looked almost like a potassium def but judging by your leaf fade in the second... you up your dosage.