Well, right now i have 2 fire fish in my QT tank, they've been in there since Saturday and they were in the LFS QT tank for 2 weeks and 2 days (There was a large group but some started fighting, these 2 seemed to be friends, always sticking with each other, helping each other hold their ground) so they we moved to a separate tank and i liked them, so he put them in a different QT tank (All their tanks are independently filtered and have uv sterilizers) so in total it's been about 2 1/2 weeks in QT. They look good and are eating well, but i wanted to try the TTM. My only problem is, i have 1 extra heater, and 1 extra tank (The QT tank) but i saw some people used buckets. Would that be okay to use a bucket with a double airstone? Also, would i have to use RODI water or would tap water with Prime be okay? Thanks