when i arrive his house i saw ick and a scretch on his back, but overall the fish seems alright, so i still bought it home with me.
when i put him in the tank he just sits on the gravel, i think he's just not used to the environment, for the ick, i already added some salt and raise the temp. its a 3'x1'x1' tank, i use rena xp3 filter, and has been running for 1~2 month, ph is 6.9 and i checked ammonia and no2, both is 0,
what should i do with his back? i have some triple sulfa, that i've used for a scretch on my previous puffer as well(saltwater narrow lined puffer, died cuz i bought liverock in, after i dump the rock in i found out it is not cure yet... but its too late, and the store didnt tell me that too.)

btw i know i need a bigger tank, he's 5 inch now, once he hits 6~7 inch, i will give him a bigger tank, i getting a job so i can buy a new tank for him, so dun worry, his tank is going to be upgrade in 1~2 month
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