Need advice on keeping the fermenter cool

Quite simply, it is already over 80 degrees here in SoCal. My first couple batches I was able to make without any method to keep the fermenter cool, as my apartment was at 67F. I know I made a few mistakes with those, they still tasted quite wonderfully, even if the alcohol content was low on one batch, and the other batch turned out closer to a style I wasn't trying. Now that I have a few experiments, and have figured out what I messed up the first two times, just rookie mistakes really, I want to get a batch the way I initially intend.

I was curious what the best method to keep my fermenter at the proper temp in a warm environment. I was just going to buy a tub, and keep it full of cool water, but if there is a more efficient way to do this I would love to know.

I am limited to the space in my apartment so a fridge, or anything much larger than the corner that I have set up know.

Welcoming all ideas.

Thanks.

 

Thanks, That was the plan, with the addition of a bit of ice when it got too warm. Just wanted to make sure there wasn't a way that I had not heard of, or something more efficient.

 

Bookmarking both of these. Out of my price range right now, but will be making this purchase once I get a nice commission check.