Urgent fish help please!

[GoneFishing99]

I just found these in the street, in a jar. Have brought them home and put in the tank inside the jar to acclimatise(??)

Advice on immediate next steps please? Will buy a bigger tank urgently but just want them to survive this part.

Thank you have applied to join Facebook group. They're all still alive at this point 👌

Good good 😊

Remember to change most of the water daily, this is really important as without a cycled filter and/or lots of live plants in such a small tank failure to change the water daily will lead to life threatening ammonia build up.

Once you get a filter in it will take a few weeks to ‘cycle’, you’ll need to continue to water change daily until the filter is cycled.
You’ll need to use test strips to monitor the levels in the water.
When the filter is fully cycled the levels will read ammonia 0, nitrite 0 and nitrates you want as low as possible.
I forget the safe limit, think it may be 30.

You don’t need a heater.

Goldfish prefer still water, personally, I wouldn’t bother oxygenating the water with pumps, I’d use live plants, unless you see signs the water is poorly oxygenated eg fish start swimming much less, hanging around the top, gasping at the top, in which case, you need to get an air pump which will need airline tubing and an air stone or bubble wall attached.

Don't feed too much, a little bit and make sure they have eaten it, if any still floating around remove it if possible. Excess food will lower the water quality.