Keeping temps while changing water
- Thread starter Rmelz
- Start date
Hmmm, well, I let the water run over my wrist until it feels about right, then switch the valve to run it to the tank 
Once it's filling, I check the outlet below water. It's really easy to tell if the temp is a degree or two different than the tank water. I do monitor the temp in the tank with a digital thermometer as a precaution. I fill pretty slow so I can monitor the temp.
Your way sounds pretty cool! Any specs on the valve?
Once it's filling, I check the outlet below water. It's really easy to tell if the temp is a degree or two different than the tank water. I do monitor the temp in the tank with a digital thermometer as a precaution. I fill pretty slow so I can monitor the temp.Your way sounds pretty cool! Any specs on the valve?
i just add water from the bathroom sink that feels like the water i took out. if im doing a big water change over 50% i'll hold a thermometer under the python until its reading the same temp as the water in there.. worst i've done is raised the tank temp by a few degrees and i think that isn't tooooooo bad for them.. I hate 20 gallon tanks cause they are harder to get right the 50 gallon is easy to keep the water stable and when i get my 300+ it will be cake
I just try to get the fresh water about the same temp by touch, on a 25% change it rarely changes the temp of the tank more than one degree F
I use two cups at my sink. 1 cup is filled with aquarium water and the other is filled with tap water. I stick two fingers in the aquarium water cup, then two in the tap water cup and compare the different temps. The tap water cup is initially not close enough so i adjust the faucet, re-fill my tap water cup and try again. Once i get good matching temps between the 2 cups I hit the switch on the python to re-fill the tank. I like this because I don't need to keep running from the tank to the faucet to adjust the temp, everything is done at the sink. I usually do large WC at least 50%. The time it takes to empty and re-fill takes about an hour. This is not enough time for the remaining tank water to drop too low. I have a freshwater tank, i don't know if this would work well for salt.
I've figured out pretty much the right position for my faucet handle for the correct temp in my tank. Might be off by a degree or two, but I'm usually right on. I error on the side of a bit too cold than a bit too warm, partially because I keep a lot of fish where colder water changes are a spawning trigger anyway.