All the fishes in my tank died

[G H Nelson]

Hi @maverick786us
You have very low plant mass from slow-growing plants. To help mature the aquarium, you must increase plant mass to fast-growing stems!
These can be removed later....to improve aesthetics.
Below is a heavily planted aquarium.

hoggie

 

[Iain Sutherland]

Hey Maverick, you're really making life hard for yourself fella. Everyone is trying to help but you seem reluctant to take in and action any advise.
Your tanks is still really dirty, everyday that passes without you getting the tank sparkling is making life harder to turn it around. I can see other algae now taking hold which will get worse very quickly. The BBA in the rear corners is a sure sign of a dirty tank and poor co2 distribution, this will get significantly worse by the day and start affecting the whole tank pretty quickly.

You really need to scrub the tank, clean all the glass, toothbrush rocks and wood, remove dead and dying plant matter and really waft your hand around your plants with to disturb the detritus before completing a 50/70% water change, dechlorinating the replacement water. Then continue this with 50% water changes daily and get some fast growing stems. In a couple of weeks you will see really solid improvement.
I'd also suggest, if you can, raise you llights to reduce intensity until you are back on track.

This really is the absolute basics of establishing an aquascape, especially with co2 and if folks can't see you helping yourself then their time and help will dry up.👍

 

[PARAGUAY]

Of all the stems l have used as Hoggie mentions Hyg. Polysperma l really love this plant and it really will help cycle your tank. And taking note of post above with maintenance and water changes. Get all this together,forget about thinking of adding livestock for now

 

[bazz]

You was advised when you first revealed that you had these fish in an immature 60cm aquarium with wildly out of balance and fluctuating parameters to return them to the vendor and yet you chose to keep them until they sadly passed taking the Angels et al with them. I really cannot understand why you would not ask for advice and learn first before you make any decisions or purchases instead of coming here looking for answers to the problems of bad decisions which ought to have never existed in the first place.
I'm sorry if my bluntness has upset you (or any others for that matter) but when I see that photo of those poor fish it deeply saddens me.
We want you here to share our knowledge, experience and assist in helping you to achieve an acceptable outcome but please please no more impulsive purchases of anything that has a face.
Cheers!