Stanley the Fahaka puffer bot eating!!

[p5ych3d]

I've have Stanley about 8 and a half months. He's never been a big eater oddly enough when I got him i couldn't get him to eat for a couple weeks until I did a garlic soak on his blood works he was kept in a 20 long until he was about 5 inches long a week or so before his move to the 125 he stopped eating or swimming around now that he is in his 125 he is definitely swimming around a lot more looks beautiful bright yellow belly and stripes only very slight darkness in back area and has now gone on 3 weeks with nothing maybe 1 snail and he may have actually spit that out ive veeb keeping track of everything 3 weeks and nothing but he looks extremely healthy ive treated with prozipro a few rounds tried garlic soak any thing I can think of I tried so far
Ammonia 0
Nitrite 0
Nitrate 10-15
Ph 7.4 7.6
Temperature 78 steadily
Tested with api master kit
Plenty of hiding plqve plants rocks soft sand please give me any ideas you can thank you

Also 2 canister filter 1 penn plax 1500 and a vevor 528gph just for bio.

[Pufferpunk]

Try live earthworms.