Sorry about your loss. you may be able to get better help from the "fish" subforum, but my hunch is that the tank is still cycling. The plants will be ok. You may want to do a water change every 2-3 days. provide more oxygen by pumping air will also help.
Another thing to try is to get the "startup bacteria" in a bottle. I remembered someone mentioned that that thing works. I am a little skeptical myself though.
Hope things will turn out better.
let me know if I can help man.
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