i have one driftwood in my tank that my bigger NGT hides in. so i felt bad for my other NGT and place in a clay pot for him to hide too. but now the bigger NGT has claim both the driftwood and the clay pot. another weird thing is the smaller NGT is getting beat up a lot more because of it. i just turn the openning of the clay pot away from the openning of the driftwood to see if this helps, so they cant see each other when one is hiding. if not sure i just take the pot out?