The biggest problem with a betta and a tank that size is that you need a decent strengh filter, and betta won't like that. I put him in my 40L tank and he just started getting blown around by the current. So I put him back in his 20L spone filter tank
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40L - 1 opaline gourami
160L planted - 8 harlequin rasboras, 6 tiger barbs, 2 swordtails, 1 bristlenose pleco
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