You say you have done research????? What.....did you ask your supplier what you should do????
I have to agree with AJ on this one. Even I posted at the beginning of this thread (or it was your other painful thread where we were telling you that you were getting scammed), that you best do a LOT of research before jumping into keeping rays. You have gone about this all *** backwards, and not listened to any of the experienced keepers advice.
Now you have two more sensitive rays ,In too small of a tank, that has ammonia in it, that is underfiltered, and you have tankmates that are not really suitable.....yet you STILL ask these questions......Usually people have the tank, water, filtration, tankmate issues all sorted BEFORE the rays are introduced.....not after! These Flowers are in for a poor life or early death, if what you have done so far is any indication of your ability to keep them healthy and happy.
This thread has been brutal to follow and now I must say that I feel bad for your rays....if you actually LISTENED to some of the advice that has been given to you, you would be richer....not only in your experience with rays....but your pocket book as well!
Maybe get some books and do a bit of ACTUAL research....educate yourself
I'm out