went and got new tank for my babies today. waiting a few days til i actually put them in to let the water settle down as i dont want to lose them. there's no problem with my water in my old(er) tank. no ammonia, pH perfect, no nitirtes, did a water change to lower the nitrates a little bit but they were ok anyway. soo, how long should i wait to move the babies form the bigger tank? also, do you think the stress of taking some of the gravel from the old tank will harm the other fish?