The Puffer Forum

So I have 4 gsp is a 60 gallon tank. I know that the tank is not big enough for 4 of them, but they are quite small and docile now, they will be upgraded within the next 6 months as I am setting up a 150 for them. I have a lot of driftwood, plants, and some dead coral to break up the tank. Any way he has been sickly looking since I've gotten them. The others are healthy with white round bellies....He however has kept a dark belly and is thin. I have dosed with general cute for parasites but it has not helped. All water parameters are good and salinity is at 1.004. I have been raising it slowly over the few weeks I have had them. I feed them snails a couple of days a week but they also eat frozen bloodworms, clams, brine shrimp, and krill. I just don't know what to do for him. Any recommendations are appreciated.

Dosing the tank will not help your fish, unless they are external. You MUST treat the puffer's food, to combat internal parasites: library/hospital/internal-parasites-pre ... treatment/

As a saltwater keeper, I question dead corals th plants and wood. As the coral slowly breaks down it will alter the ph of the water. It is also a threat to skin damage as coral is very sharp. This only applies to general water quality not your puffers illness.