I offered my clutch their first feeding tonight. 5 of the 6 took their hopper after they got tired of it running around their tub (4 or 5 minutes) and one did not eat ... I sat there and gave him about 45 minutes before I gave up. It didn't seem to stress him out, he could have cared less it was even in there with him. A few times he locked onto it (visually) and I thought he was about to take it but then he just turned and explored the other way. How long should I wait before offering it to him again 2 or 3 days?