you should atleast get an airstone, and should use a heater.i find my fry does better at about 80.i have a 10g that i use, with lots of plants to hide in.you could use a bare bottom, and if you can get a filter, put a sponge over the intake.
i've stuck fry in a bucket with an airstone for a couple of days, but made sure there was a heater.
gl
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