I completely understand that a 29 gallon is not the best tank for angelfish. The reason why I am even using it is because I previously had fish and this tank has been sitting in the garage for a good 2-3 years now and because my parents don't want to buy a 75 gallon and have all the fish die ( they say this due to my bad experience with fancy goldfish in the past and I now know it was because if overstocking) and realize they wasted a good amount of money on this tank. This is why I have to wait 6 months or so before upgrading tanks, to ensure that I have a good chance of having my fish survive. The time period can probably be shortened to even 4 months if the fish do well, so with this, what would you recommend?