They will go in my 72 g. I know that I will have to trade in my ottos, and probably the cory (he's rather fast). So, there will be one Angel, maybe the 5 Serpae and 5 Head and Tail Lights, (they are getting rather old), and maybe some more clown loaches. I have soft water (right now kh is 2, and ghis 4). Ph is all over right now. I have an Eheim Pro II 2026, and an Aquaclear 402 powerhead w/ quickfilter (going to add CO2 DIY reactor to the output of it), also use HOT Magnum after 50% weekly water changes. (no RO/DI though). I do have Black Water Expert, if needed, and live brine shrimp to feed them, plan on getting a beefheart and fixing it to freeze. Hmm anything else?