So now a new issue arises. My local guy doesn’t have all the fish I want. I can order online from live aquaria but then they won’t guarantee the sex on the Pearls. So if I order online and it won’t deliver until Tuesday what do I need to do to the tank to keep it going? Also if I order online, get everything but the Pearls on Tuesday, go pick up the Pearls locally on Thursday so I can get the male/female would that be ok?