Question: Which is worse??

[LippyNix]

My tank sits consistently around 72-73 degrees, which I know this is too high, so I purchased a tower fan and attached it to the wooden hood on my tank. The problem is that the fan is creating a LOT of surface agitation. The plus is my temp dropped almost 10 degrees in less than 24 hours. I'm at a loss as to which is worse for my axies: high temp with low agitation, or low temp with high agitation.
I also added a bubble wall for oxygenation, and I'm wondering if I should remove it since it causes water movement. I have a submersible filter with a built-in spray bar, but it attaches to the glass with a bracket and I can't turn it to flow against the glass. I did put it behind the driftwood, which disperses the water flow from a couple of the outputs on the spray bar.
I have also noticed that my axies don't seem to be themselves since I added the fan. They are very lethargic and don't swim around like they always have. They used to follow me when they saw me and were hungry, but now I have to find them in the tank to get them to eat, which is a pain because they invariably are in an awkward spot.
I would appreciate any advice on changing any of these things, but a chiller is out of the question! I'm a full-time student and a live-in caregiver for an elderly relative and I simply cannot afford to spend that kind of cash any time soon.
Thanks!!

 

[Bellabelloo]

Can you show us a photo of how the fan is set up please and the tank please :}

Reducing the water temperature is important. Hopefully once we see the photo's we'll be able to offer more advice.

 

[LippyNix]

The fan is attached to the wood top with plastic zip ties. It's the black thing you can see on the top of the photos.
I think the water movement is visible in the photos.