We dont feed any baby brine. We straight from rotifers to TDO, we use the "A" its the smallest size. Keep in mind all species and every batch of fry are different. After 5-7 days of rotifers, you can start to add a very small amount of TDO (less than a pinch) After a few days you will notice more and more fry going after the TDO. When that happens, stop adding the daily rotifers, the fry that are not eating TDO yet will continue to eat the rotifers. Replace the daily rotifers additons with TDO feedings. Clowns are pretty easy to wean off of the rotifers and onto TDO. Once you get them all eating TDO, give them 3-5 days and start adding in the next size TDO. You will just have to judge how your clowns are growing and what size they can eat.......theres a lot to learn still but you are at a great place. Hope you have a blast with this and if I can help, I gladly will. If you send a pm it goes to my phone, I am not on here a whole bunch due to the 15 pairs we deal with :)