Betta clamped fins and shivering

[Punjabiking1500]

Guys I have to go outstations so I have to leave my oscars with a person to give food and take my small fishes with me I think that the cycle is reset here i took my old sand which I used in my home tank and used here today my betta is shivering and I see time to time clamped fins the tiger barb in that tank was also doing death roll but somehow saved him tank is not so big I think it is 3 gallon what shoul I do pls help
There is no filter here I do water change everyday

 

[Krismo962]

Pics would help - clamped fins are usually a sign of stress, the tiger barbs could be bullying the betta.Your fine without a filter if your tank is heavily planted and stocked with 1 betta.

 

[Punjabiking1500]

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[Punjabiking1500]

There is video if it shivering but I am not able to share it

 

[Punjabiking1500]

I don’t have conditioner should I buy rid all and inch guard conditioner?

 

[Krismo962]

Is he showing any signs of ich? For now I would keep him in a stress free enviroment with clean water ,I would get rid of the tiger barbs.Mean little #$%$s they are,they like nip and tear at long flowing fins.The tears could turn into fin rot.
Environment*

 

[Punjabiking1500]

Is he showing any signs of ich? For now I would keep him in a stress free enviroment with clean water ,I would get rid of the tiger barbs.Mean little #$%$s they are,they like nip and tear at long flowing fins.The tears could turn into fin rot.
Environment*

Ok bro I have changed water just now and separated the barb they are really mean ****

 

[Punjabiking1500]

I don’t see sign of ich

 

[Krismo962]

Dosing ich meds wouldn't be needed then.

 

[Punjabiking1500]

Dosing ich meds wouldn't be needed then.

I can say that it is lathargic and has clamped fins but no white spots and not rubbing with surfaces