Tank temp >80.

cranberry

Active Member
Nice tank.
What do we think happens to the tank parameters when the temp goes up?
How do we think this affects fish?
 

aquaknight

Active Member
Originally Posted by Cranberry
http:///forum/post/3112365
Nice tank.
What do we think happens to the tank parameters when the temp goes up?
How do we think this affects fish?
I think here's where you'll find your separation, between people with reefs with just a couple fish(they aren't the focus), and people who tailor their tanks to their fish first, corals second. Mainly because of warm waters inability to hold dissolved oxygen very well.
 

bang guy

Moderator
Originally Posted by Cranberry
http:///forum/post/3112365
Nice tank.
What do we think happens to the tank parameters when the temp goes up?
How do we think this affects fish?
First and foremost, a higher temperature lowers oxygen levels significantly. If waterflow is not high then animals will suffocate. This happens naturally fairly often when a high pressure dome covers a large area of water and raises the temperature while also slowing the winds. The result is warm calm water and dead corals.
For fish, it depends on where their natural habitat is. Fish naturally found in cooler waters may be negatively affected, fish from the Red Sea are not going to be bothered by anything below 90F as long as there's plenty of waterflow and the temps don't fluctuate rapidly.
 

cranberry

Active Member
For fish only....if some kept their tank 78-80, would you recommend they increase heat it up to 82 to 84 so the fish would be "healthier"?
What would the logic be that I'm missing?
 

jackri

Active Member
I think for fish is what he's saying is the higher the tank the more need for oxygenation (if that's a word).
For example (may not be a great one) but I like to go fishing with minnows. In the summer they die without being submerged over the boat/off the dock REALLY fast even in a full bucket of water and sometimes fresh flushes of water into the bucket aren't enough.
Now opposite end... I was going ice fishing -- had about 4 inches of water in a 5 gallon bucket of water and my car broke down and had to get it towed back as I got a road from some friendly passerby (before I had a cell phone some years back). Now the car was in the shop for about a week getting the head gasket replaced, shop was around 40 degrees give or take I guess I'm not totally sure but when I went to pick up my car and REMEMBERED there were minnows in the car yet I thought oh great.. stinky car. Nope ALL of the minnows lived in that little bit of water that week, into the next week in my garage until after 2 weeks in that bucket I used them fishing.
Cold water IMO not only slows the metabolism of fish, but also increases the oxygen levels (or the ability to hold oxygen). These same minnows would've been dead inside an hour on a day like today in that same bucket -- but fully aerated with high levels of oxygen.. who know?
Maybe I missed the point but it's late and I'm bored at work and just thought of that story :p
 

cranberry

Active Member
Originally Posted by jackri
http:///forum/post/3113236
I think for fish is what he's saying is the higher the tank the more need for oxygenation (if that's a word).
I wasn't responding to Bang Guy.... but trying to reword what I was trying to "get at".
I've seen someone recommend it... just trying to figure out why without offending.
 

jackri

Active Member
No offense taken
Most of my googling is blocked but from what I can tell "everyone" seems to agree that 82 degrees is like the absolute cut off before problems start. I cannot however find anything why someone keeps it above 80 other than Bang Guy saying his corals grew faster. Everything I can find is basically running that high due to lighting and getting it down to those levels and not rising it.
Almost seems like it would have to speed metabolism in organisms making them grow faster wouldn't it?
 

bang guy

Moderator
Originally Posted by Cranberry
http:///forum/post/3113235
For fish only....if some kept their tank 78-80, would you recommend they increase heat it up to 82 to 84 so the fish would be "healthier"?
What would the logic be that I'm missing?
I really don't know for sure. I believe it completely depends on the species of fish you are keeping. I cannot think of any hobbiest fish that might benefit from a temp greater than 80F. If there were such a fish it would be native to the Red Sea or some other area that averages 85F+.
 

spiderwoman

Active Member
All of my tanks except freshwater are at or above 80. It's not really a choice of mine, but MH lighting makes sure they climb to 81-82 on daily basis. I have a chiller in the largest tank, but it has 3x400MH lights on it and chiller is set to turn on at 82.
Upstairs tanks climb to 82 when the upstairs A/C decides to not keep up with the rest of the house. When the inside temp goes to 77-78, tanks will climb up too.
So I really don't have a choice unless I want to get chillers to all tanks and get an even higher electric bill. Nothing has died in my tanks for a long time.
 
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