Planted Tank Not Doing Well

I have a small 10 gallon tank with a gravel substrate and LED light (10W, on for 8.5 hours a day). The plants are: moss ball, java fern, ludwigia red and anubias nana. All pretty much low light plants that just feed from water column and do not need a substrate. Most of them are either attached to something or loosely planted in the gravel (just the roots, not rhizomes). I dose Nilocg Thrive fertilizer once a week. There is some brown algae on the glass but not a lot. Unfortunately, most of the plants are not doing well. Ludwigia I think is melting, java fern has dark brown spots on all the leaves. Older anubia is melting as well. New anubia is doing fine (for now). The tank looks terrible.

Is there anything wrong I am doing? There is currently no fish in the tank. Just the plants plus fertilizer. Filter and heater is running so no temperature swings.

 

How long have the plants been in there? It's not uncommon for the plants to experience melt when they get moved to a new tank. They'll get new growth eventually which will do better. Pictures of the java fern?

 

Moss ball and anubias nana are in the tank for over a year. Anubias lost most of its leaves though in the recent months. Moss ball is tough so looks great. Ludwigia, java fern and another anubias were added about 2 or 3 weeks ago. About half of the ludwigia red is melting. Another ludwigia (forgot the type) is almost all gone. Nanas are doing fine so far.

Java fern and ludwigia (in the back):



Another ludwigia (almost totally gone):

 

Maybe add root tabs to the gravel for the ludwigia.

 

I have a small 10 gallon tank with a gravel substrate and LED light (10W, on for 8.5 hours a day). The plants are: moss ball, java fern, ludwigia red and anubias nana. All pretty much low light plants that just feed from water column and do not need a substrate. Most of them are either attached to something or loosely planted in the gravel (just the roots, not rhizomes). I dose Nilocg Thrive fertilizer once a week. There is some brown algae on the glass but not a lot. Unfortunately, most of the plants are not doing well. Ludwigia I think is melting, java fern has dark brown spots on all the leaves. Older anubia is melting as well. New anubia is doing fine (for now). The tank looks terrible.

Is there anything wrong I am doing? There is currently no fish in the tank. Just the plants plus fertilizer. Filter and heater is running so no temperature swings.

Your ludwigia red isn't a low light plant. I have this as well and needs high light, co2 and lots of ferts. I get massive growth just can't get it to stay red.