I get the time constraint issues that's for certain!!
I didn't mean to imply you didn't 'care' for your fish, it was just a sweeping statement from someone who sees the bitter side of the 'hobby' every day! Nothing personal at all!
Is there a hurry for you to do something immediately? If you are happy to take your time and do lots of reading... there is lots of literature on how to set up a DIY CO2 kit using yeast and other easy to get hold of products... by all means it isn't a difficult or expensive process.. just takes some research
Could be an interesting project?
I see fish as something endlessly fascinating... I find with my customers (in the trade lol) are getting bored, the best I can do is treat it the same way i treat people with a phobia of reptiles. You don't push any particular point, you talk broadly and see what they pick up on as interesting to them.
For example, with someone who is scared of lizards... we were chatting about anything and everything totally unrelated to reptiles... but meanwhile i had a fat tailed gecko in my hands... during that hour... when it related to the conversation... i would point out something random... like how cool its ears were, and how you could almost see all the way through its head via its ears LOL.. or its tiny little toes.. or its fat tail where it stores the fat to keep it alive.... or the pupils in its eyes that are an odd shape... things that someone might not necessarily consider... on each point... they leant further forwards to look at what i was talking about.... and after an hour... with no anxiety at all and without saying anything... they reached over and stroked the gecko on the head... and then carried on chatting... was ages before they really realised what they had done... as soon as they realised... they were scared of lizards again...
But my point was.. there are always more interesting things you can learn about a species than the glaringly obvious...
How about doing some really in depth research into your species? The internet has an absolute wealth of knowledge if you can take the time to look at it!