This summer I sit there 5 gal buckets of saltwater outside and let mother nature warm it up...I test all my parameters on Saturday morning. Then I do a 4 gallon water change on my 10 gallon tank. I'm trying to get my corals a little happier. As an FYI, I microwave a portion of my distilled water to mix in with the rest and get the new batch of saltwater at the right temp. Faster than waiting on a heater. I also clean the power head, the heater, and the filter at the same time. I clean the glass and get it all nice. Takes about 2 - 3 hours. Then on Saturday afternoon, I go to the LFS and buy something.