tetra has white spots

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I have done my weekly water changes of 10%. Room temperature around 28 degrees but will drop to 25 degree at night due to air con. My tetras now have white spots, any ways to cure it without killing my plants and shrimps?

I have bought anti-ich before and quarantine both fishes but they still die.

[David]

Check your water for excessive NO3. Your temperature swing is quite wide and may comtribute to stress.

You could go for salt treatment and borrow a UV Sterilizer and run it for 3 weeks. 4 would be better.

Do not use table salt...it need to be aquarium salt.