Nouchal hump grows in just one week?

[fwlion]

When I put my Amphilophus Amarillo in a 75 cause he was a bully (he was in 190 gallon) his hump was a lot smaller after 1 day. When I put him back in the 190 his hump got huge again. So I don't think a small tank is going to help them get a hump, and mine was glass banging and kept in those temperatures.

To the op: very nice fish you got there, I wouldn't bully him and stuff like that. Just grow him into a monster, he'll have a huge hump in no-time.

no the smaller tank is for him at a smaller size right now to keep him upclose and personal with you to encourage him to LOSE ALL fear of ppl. and foreign objects get him more aggressive, nothing directly related to hump growth, the aggression in return will help the hump growth NOT THE SMALL TANK THT SERVES OTHER PURPOSES