So, I've been doing water changes with buckets for a while now since my tank is three rooms over from the sink. However, as the weather warms up, I'm thinking about using the hose. Unfortunately, the hose only has cold water, but the tank is tropical. How would I approach this, hauling 40 gallons of water by bucket (8-10 trips in both directions) or using the hose? And how do I go about heating the water from the hose? Does it even matter if the water is cold (I would assume so, but what do I know)?