To achieve the levels of proper gh and kh for live-bearers I mix 50% RO water and 50% tap water. This gives me readings at about 10 to 12 gh and kh.
The tap water comes from a spicket before my water softener and comes out at 55 degrees f. The RO water comes from my RO filter and comes out at about 62 degrees f.
To bring the water temp up to 78 degrees I bought a plastic storage container that I typically keep about 26 gallons (13 gallons tap and 13 gallons RO) of water in at a time. I keep a 200w heater in the container along with a power head for water movement. There is also a pump I keep in there so when I need water I just flip a switch to pump some water out.
So now for my questions:
1) Am I crazy for doing all of this and is there an easier way to get water to a good temp before doing water changes? I know a couple people who do water changes directly from their tap and don't care about water temp. at all.
2) Every 4 to 6 weeks I start getting a slimy build up on the power cords, plastic hose, and sides of the container. Is there anything I can do to eliminate the slimy build up-maybe a filter or a uv light?
Please note that I do 50% water changes so really cold water would affect the aquarium water temp.
Sorry for such a long question and thanks for any responses in advance.