What should I do to fish tank after my fish died?

Question:

Also the water is a little cloudy i heard thats normally during cycling? I'v been cycling for 3-5 weeks now.

Answers:

You will also have some happy fish who do not get sick.

your original fish could have died from a parasite so you need to take the tank and put it in like SUPER hot water to kill any bacteria or parasites that could possible be on it.

first of all wash ur fish tank with salt and then put chlorine free water into tank turn filter on , switch on oxygen do this cycle for 2 days after that put ur fishes into tank , maintain ur water temperature between 24 to 28 degree celcius

put parisite medications in and remove activated carbon

the guppies and glofish and frog sound much better and it won't be over crowded. I'd still suggest a heater... even though room temp is usually okay for your choices, a heater will keep the temp stable.