Plant problem.

[fishfirst]

Hi guys,

Need your expert advise on the plants problem faced as attached photos. The plant grow well in the first few weeks. after that, can see one by one of the leave grow pail, then transparent and die. What is the cause and method to cure it?
Thank you.

[k3nlim]

what's your ferts regime?

[Shadow]

please post your tank spec such as, tank dimension, light wattage, CO2, Fertilizer dose, substrate, temperature, etc

[fishfirst]

My tank size is 48"(L) x 15" (W) x 24" (H). I have 4x54W light open for 7 hours daily with CO2. Temperature around 28 degree C.I put JBL aquabasis plus as the base and holland sand on top of it. I didnt put any additional fertilizer dozing since the first day.