Fish disease ID And help

[fateddee]

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Hi can I ask if this is fin rot or fungus?
I'm afraid to put ocean free medication(as in the photo) because I'm afraid it will damage the plants.
Any other solutions?



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[fateddee]

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[Bieffe]

Now days guppies die easily. Do u have other fishes that will nip their tails...once slight tear their will be infected and rot.
I recommend salt treatment. 2L of water and 1 teaspoon full of salt. Stir to dissolve then place these 2 fish inside. Change water daily 80%....continue salt.