I just moved to Phoenix, Az. and am setting up my aquarium. 120g (4x2x2) African cichlid set-up, went to finally fill it and it dawned on me that my "cold" water isnt cold enough. Its summer time and the cold tap is 90+ degrees.
What do I do ?
Let it cool down to room temperature. This is assuming your house is cooler than 90+ degrees. Since this is a new setup, I would just fill it with the warm water and be done with it since no fish should be involved.
< same situation, but no obvious issues in my 78-80 degree tanks. frozen 2 liters work while refilling... but it sucks. I've just downsized my water changes to 25% since the tap raises the tank temp so darn high.
Personally I would look into getting a Chiller for the tank during the summer and until then doing waterchanges with ice/iced water. Don't quote me though, I've never attempted to keep cichlids (though I have iced my tanks before, seems to work fine so long as there is a good current and the cold water doesn't collect in the bottom).
chillers way to expensive to operate. If you can, open the tops, keep the lights off, oxygenate oxygenate oxygenate keeps air pumps going to keep oxygen in the water column and introduce air temperature into the tanks. If located on slab that is cooler, and is this is for a 120g you could set up a sump on the floor that may drop temps, but you would add temps in the pumps to get back up to the tank.
I keep the house cool enough (AC set to 85 during the day, 73 at 9 pm til about 9am) and the temps really don't get much above 80, even after a 35ish% water change.
You could put ice in the tanks to help keep the water cooled down. BUT this would only be a temporary solution because the water will just heat back up. I use my AC to help maintain my tank at a constant 78-80 degrees. My tank is set up right next to the AC so i just aim the AC towards the tank and its been working well all summer. I only have my AC on at night so during the day i use ice to keep the temperature down.
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