I have. The tetras are from and existing 29 gallon that we had to convert to salt because a green spotted puffer we bought was sold to us as a freshwater fish which we did not know had to be converted to salt later on. Because of the 5 large plecos and 2 large discus which are pretty large dumpers I feel my tank at its max capacity to keep my nitrate levels at a consistent 0. I have wanted a large school of the clear tetras but I have the tank so dialed in for what is in it that adding a large number of fish just isn't in the cards at this moment