Is this bloat?

[craig121]

Hey everybody, recently I got a trio of African clawed frogs in a 29 gallon aquarium. Their tank is pretty bare bones and there is a sponge filter BUT it isn't cycled however I do 75% water changes every other day, so the water quality isn't terrible but it also isn't pristine. I noticed one of the frogs is kinda puffy and I was thinking is it bloat? There is only about 15 to 18 gallons of water in the tank, should I put in 3 tablespoons of espom salt? Thanks

Doesnt look like bloat from here but I have a couple of suggestions, firstly cut back the water changes twice weekly @ roughly 25/30%# the reason we need to encourage good bacteria that will feed upon the frog waste #
The nitrogen cycle describes the process whereby ammonia products(frog poo/pee which are secreted by frogs as waste, are converted by bacteria to nitrite and then into nitrate. Ammonia and nitrite are highly toxic to frogs in very low concentrations, so establishing the bacteria colonies that quickly convert these compounds to nitrate is crucial to creating a healthy environment for ffrogs.#### Nitrate are far less toxic, and can easily be removed through periodic water changes or consumption by live plants.
we need the conversion to Nitrate as its less harful than NITRITE, to many water changes or to much will not allow correct cycle,,,,,Also adding water conditioners CRUICAL as Toxic metals and Chlorine in normal water are fatal to these frogs
I suggest you cut down feeding every 2nd DAY and monitor PH levels and get some test strips for Nitrate until the tank is showing the correct signs of balance
The sponge filter is perfectly fine but only ever wrinse slighltly with old tank water when its becoming clogged in slimey poo, if its pumping away and looks good its doing what its suppposed to do by nurturing millions of hungry Amonia eating bacteria so allow it to be slightly dirty..
Ps am hoping that terracota pot right of pic was there home they need something to hide, they look in very good health so your doing things mostly correct )

Can the filters Airation be reduced to just flow and no BUBBLES frogs dont need Airated water they breath @ surface and you risk gas bubble disease?? also it can disrupt there sensory system, but the bubbles do not look to severe so maybe OK