just moved some more into the 10G, now that's all I shall move. The rest can stay where they are, see what happens with them, (both tanks)
Also I got a HYDRO mini 7.5w heater, it says it will heat a tank that is 5G's so me thinking it would be o.k as it was filled way less that half, I would of said I filled it about 4/5 inches deep BUT no it didn't work, I woke up this morning, had a look at them just to see if all was O.K..... you know how it is..... and saw a white bit of what looked like a fur-ball, it was sticking the fry to it so I took it out and as my hand went in I could feel how cold the water was.... now they have the 100w heater out of my cube tank leaving the cube tank without a heater but they will be good with out 1 in there for now.