Hi...I have a 54-liter tank...I am buying a new one 84 liter. Is it safe to transfer fishes from the old tank to the new one?... I will transfer gravel, filter, plants, stones, wood, I will also transfer all the water (and add some of the new water) and I will add some substrate for fish underneath. I have 8 neon tetras 6 killifish, 3 dwarf rainbowfishes, 2 otocinclus and one pleco. How will otocinclus be after that? Please help!