I bought a large portable AC on craigslist for cheaper than a de-humidifer. Make sure it has a dehumidifier function or else it's just pumping the humdity into the hot out hose. If it has a dehumidifer function you can run it with the hoses off for winter, and hoses out the window in the summer for AC. Works great... except that tank takes 12 amps, AC takes 11.... 23A is more than my 15A breaker
haha. HRV is the uber way to do it, if you have room and funds, go for that. Mine was the cheap fix that's going to hopefully keep my fish room cold this summer aswell.