Ideal temp

A

Ajholms0427

Member
I am wondering what temp you guys keep your reefs at? I'm curious because I've always keep mine right around 78 degrees but seeing others controller displays and asking around I've seen and was told a range from 72 degrees up to around 84. I'm wondering what the best temp is for coral growth and health.
 
Most reefs, in the wild, can range anywhere from what you just described.

I'm not sure there would be a best temp, just a stable one.
 
There are aome fish like the catalina goby like cooler water. Its all relative to what you keep in your tank, and what makes the inhabitants happy. To directly answer your question in the summer I let my tank get as high as 82 on really hot days, but most of the time 78

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frostyjay1 said:
There are aome fish like the catalina goby like cooler water. Its all relative to what you keep in your tank, and what makes the inhabitants happy. To directly answer your question in the summer I let my tank get as high as 82 on really hot days, but most of the time 78

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Yup, my temp in my office tank runs warm, roughly at 82.5

My other tank was swinging pretty wildly, anywhere from 77.8-82.8 in a single day. Just added a chiller to keep it at 79-80 consistently.
 
when I had a reef, it would get as high as 84 during hot days but otherwise would be around 80-82. Today it was at 84 and we don't turn the AC on much so I have now decided to just turn off all heaters and let the tank stabilize to room temperature until the weather cools down .
 
We have room ACs and its cheaper on the bill turning that on when we are on in the room compared to entire house AC. I can't handle heat like this either even though I am from the middle east area so I just hang out in an air conditioned room all day.
 
mine stays at about 79-80 due to my heat my T5 puts off . My heater is set to 76. I dont think it ever turns on.
 
In the winter I keep it at 78, but in the summer the temp fluctuates between 78 to 80.5. Since I switched to LEDs the swing hasn't been as wide. I just checked my Apex records, and my heaters haven't even turned on for at least 7 days.
 
Sounds good. Another question about temp though. When I do my water changes my tank temp drops to around 74 degrees, I'm wondering if the 4 degree drop that happens pretty quickly could be harmful to the fish and coral. It only takes about 10 minutes to reach back up to 78 degrees when done. Can this temp fluctuation be bad?
 
Ajholms0427 said:
Sounds good. Another question about temp though. When I do my water changes my tank temp drops to around 74 degrees, I'm wondering if the 4 degree drop that happens pretty quickly could be harmful to the fish and coral. It only takes about 10 minutes to reach back up to 78 degrees when done. Can this temp fluctuation be bad?
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you should really have a heater and put it in the mixing bucket while it mixes. That would help to prevent that much of a swing
 
I keep my temperature at a constant 77.2-77.8 degrees. I do not have a chiller. I have a fan on a timer from 9:00A.M.-8:30P.M. I do 15 gallon weekly water changes, in 3 five gallon buckets and have a heater in each of them to prevent temperature swings like you described. A temperature fluctuation of 4 degrees could be harmful to sick, or stressed fish, but to most fish and corals, it wouldn't be that big of a deal.
 
Ajholms0427 said:
Sounds good. Another question about temp though. When I do my water changes my tank temp drops to around 74 degrees, I'm wondering if the 4 degree drop that happens pretty quickly could be harmful to the fish and coral. It only takes about 10 minutes to reach back up to 78 degrees when done. Can this temp fluctuation be bad?
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The water your using for the water change should be the same temp for two reasons.
One: Salinity is read differently at different temps
Two: Shock to the corals if the colder water comes in contact with them before heating up.

Solution: Just buy a little heater and drop it in when you mix salt or buy premixed water and let it warm the water.
 
+1 to a heater in the bucket. If you are doing a small change on a bigger tank, it wouldn't have that much effect but I shocked all my corals once, before I knew better.
 
Ajholms0427 said:
Sounds good. Another question about temp though. When I do my water changes my tank temp drops to around 74 degrees, I'm wondering if the 4 degree drop that happens pretty quickly could be harmful to the fish and coral. It only takes about 10 minutes to reach back up to 78 degrees when done. Can this temp fluctuation be bad?
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Another thing to mention is how quick it goes back to your running temp could cause issues to. As stated stability is the key and if it swings down to 74 and then your heater kicks on and brings it up to 78 in 10 mins I dont think they enjoy that. I attempted to create a cool nudibranch tank and messed up due to my being stupid. A more gradual increase is better (same with salinity) One thing that i have to do cause my A/C is running is ill set it a degree over my QT and shut it off so by the time im done taking water out its at perfect temp. Might want to even get a larger container for your mixings so you have to heat 1 bucket rather then more at a time. Also recommend getting a TDS meter (that checks temp as well) so you can accurately check your temps but even more recommended is a controller if you dont have one (im not sure what your using) I keep my tanks at 78
 
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