Help... (my tank needs some TLC)

Once I completly wash through the substrate and remove the mulm and clear the water it should be okay to scape I’m thinking of maybe doing rock only
 
I am going to have a dwarf sag carpet in foreground low lying broader leafed stems like bacopa Carolina and trident fern and things then fine leafed plants like hornwort and maybe some big things in the back but I don’t know yet
 
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