how much does your temperature change on a given day?

[Constantin]

My tank goes from about 77 to 78.5 and back again through the course of a day.
How tight do you keep your temps?

 

[bkcjames]

Mine goes from 77.5 to 79 and then the chiller kicks on...

 

[Toddrtrex]

Temps are a bit lower now that it is winter.... goes from 75 to 79.

 

[amnesia]

My tank fluctuates from 78-81 degrees throughout the day.

 

[Shane Hoffman]

My tank is at 75 to 76 degrees until the lights kick on. When the halides are on it gets up tp 79 in the winter. In the warmer months its 77 to 81.

 

[mnml]

74-76 my house get quite cold

 

[Pylon]

I start off around 78 and run up to about 82 before the lights turn off.

 

[Korrine]

mine is about 78.2-78.9. a degree or 2 warmer in the hot summer months.

 

[pecdo]

77-78 in the winter, up to 80 in the summer at times.

 

[karsco]

Pretty steady, since my tank is in the basement and on a RKL controller.

78.4 - 78.6

 

[Tang Salad]

76-82.5

 

[scottwhitson]

About the same as Tang Salad. 76-83

 

[Mikep503]

Summer time mine stays very steady but with the colder winter temps in Oregon and having my sump and frag tank in the garage mine has been from 75 :sad1:to 80

 

[euromomtx]

My tank fluctuates from 78-81 degrees throughout the day.

Mine's the same. I don't want a swing much bigger than this. SMaller would make me happier.

 

[Constantin]

Question to some of you -
Dont you think that going from 77 to 82-83 is too much?
Reason I am asking is because I could turn my heaters on later and have my tank run at 76 or even 75 at night and then go up to whatever it will(prolly around 78), would that be ok?
that would save me money on my electric bill.

This is a 500g SPS oriented setup btw

 

[Stripe01]

Keep your heater set at 79-80.

 

[Suzukibusa06]

Constaitisn that would way to much for an SPS tank. You need to keep that fluctation as low as you can. I would say within a .5 degree range. I have a 540 fish only system and mine stays at 79 and the chiller kicks on at 80 degrees.

Tang salad and Scott whinston that's a huge difference. Your corals or fish may be used to it but from my expericence it's asking for trouble. We have some service tanks that have swings like this and I can't tell huge differences in the growth and health of the animals. Not to mention they are harder to maintain due to nusiance algaes.

 

[Deep Thief]

I don't feel so bad anymore I thought a two degree spike was huge. Well.

 

[Tang Salad]

Temperature stability is not nearly as important as it's made out to be. It's another of those often repeated, rarely backed-up, misconceptions in this hobby.

 

[Toddrtrex]

Temperature stability is not nearly as important as it's made out to be. It's another of those often repeated, rarely backed-up, misconceptions in this hobby.

I have to agree. There have been many threads on this subject, and it has been shown that fluctuations are fine, if not helpful.

While I can't really prove it, I believe that having a fluctuation saved me in the past. Long story short, my temps jumped up to 89* for 6 hours and I didn't lose anything. I have been keeping SPS for about 10 years now, and my tanks have always had at least a 4* change per day and never had any issues.