The Puffer Forum

PH 8.4
Ammonia 0.25
Nitrite 0.5
Nitrate 100
Salinity 1.005

Tank size 13 gallon
- two 1.5 inches gsp + one 2 inches gsp

Feed ghost shrimp and mussels

What changes you've made in the tank in the last week - Did a 25% WC last week

How long the aquarium has been set up - 5 months

My 2 inches gsp refuse to eat for 2 weeks ( belly sunken in , color is nice , no black belly ). i bought it 5 months ago

Tried to feed frozen bloodworm yesterday , my 2 inches gsp doesn't seems interested

What can i do ?

Hello and

Try soaking the foods in Garlic.

Also you might have a food aggressive puffer bullying the other one.
You might have to consider separation but either way you also need a much larger tank (55 gallons or more) for two puffers or 2x 29 gallon tanks for each one.

EDIT: Just saw the nitrate reading. Do a larger water change and try to get that down to 20 or so. Ammonia is also not a good sign.

Hi yes water change of a good 50%
They will not eat with bad water quality like that seems the tank is over crowded and the filter can not cope.
Nitrite or ammonia should never be present in an established tank.
+1 bigger tank needed

+1 to comments above. The water quality is likely to be the source of your gsp not eating. And the tank needs to be upgraded as quickly as possible. If space is an issue a 29 gallon is the bare minium for a single gsp.

There are toxic waste levels in your tank. If you do not upgrade, the fish will die soon. Please read my sig.