I have a 20 (it may be 30 but I'm pretty sure it's a 20 gallon) gallon tank. I guess it's a high tank. I got it second hand from my neighbor. I am using a Powerwhisper filter and an
Ebo Jager Heater. When I started the tank I lost 4
blue damsels 
. I let the tank sit for another 3 or 4 weeks continues to add bacteria (that my fish shop recommended) and once a week did a 20% water change. Today I bought a velvet blue damsel and a blue damsel. Hopefully I'm doing everything right and they will survive. I guess those are my stats, if you need to know more let me know.
Hugs, Ell
