Just a quick update, the first lot that bred are about half a cm in size now and I have seen about 6-7 of them at the same time in the tank so things are looking good, today I spotted some more tiny 1mm red/white CRS. But also spotted 3-4 Black CRS, so I now have the Red and Black Crystals breeding in the tank
The fan really helped with the hot weather, the temps never went above 25C, now the its becoming a bit cooler and with the fans was taking the temp down to 18C I have turned them off, so the temp now stays are around 23-24C