I read several places that one gallon per frog was ok... now I feel bad...
it is a (I believe) tetra name brand aquarium and is one gallon at this full... (will attach a pic.)
I don't have any way to test the ph levels...its just the one frog. (Locutus) the temp is 75 on average... I clean the tank twice a week... I don't have a filter or bubble stone because I read the vibrations would cause him harm.... I didn't add any salt....I put apifishcare conditioner in the the water in the ratio suggested.... I have had him for a few months... and kept fresh clean spring water from our farm in his tank and he really thrived on it.... then I switched to tap with the conditioner here... the lights are off during the day and on about six hours during the night....he is captive breed by nature gift store... his staple deit is the pellets they send but I also was giving him a blood worm in the morning and before bed and he'd eat them right away.... this is the first time I've had any trouble taking care of hkm and he is the first frog I have cared for.... hope that helps....