Temp Up 2 or 3 Degrees w/ Lighting - The Planted Tank Forum
 
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post #1 of 12 (permalink) Old 08-15-2009, 01:23 PM Thread Starter
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Temp Up 2 or 3 Degrees w/ Lighting

I have a 150 gallon tank w/ 400 watts of light (5 x 80), which I run 8 hours a day (3 on, 7 off, and 5 on). The tank temperature will go from 79 to 82 or 83 with the lights on.

Question 1 - Will this change in temp hurt the fish (red line torpedoes, rummies, and cardinals)?

Question 2 - Is there anything I can do about the temp change?
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post #2 of 12 (permalink) Old 08-15-2009, 01:28 PM
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Putting fans near the lights will help evacuate the heat.

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post #3 of 12 (permalink) Old 08-15-2009, 02:04 PM Thread Starter
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Running 3 fans now (sorry for not mentioning that) - still having the heat issue.
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post #4 of 12 (permalink) Old 08-15-2009, 02:18 PM
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If it is up that far and you are already running fans then you may want to consider using a chiller. That has to be a lot of heat.

I see you are in Oregon. Do you have AC on in the room by any chance? What is the ambient room temp?

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post #5 of 12 (permalink) Old 08-15-2009, 02:37 PM Thread Starter
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Yes on the AC - we do keep it at about 72 degrees (can't stand a hot house). I was considering turning the tank back to 240w (at least during the summer). One ballast is wired for 2 x 80 and the other for 3 x 80 - easy to switch to 240. I think most of the plants will do fine with less light - they may lose some pink / red color, but they should grow fine. Will also likely need to adjust Co2 w/ lower light. Ideas?
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post #6 of 12 (permalink) Old 08-15-2009, 02:58 PM
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personally i dont think a 2 to 3 degree change in temp is anything to worry about. It is a gradual change im sure, and thats whats really important. 82 might be a little on the high side for my preference, but the change from 79 to 82 isnt something i would worry about.
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post #7 of 12 (permalink) Old 08-15-2009, 03:17 PM
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fan , air stone ,chiller is nice but pricy and could bump your electric bill up .! depend if your plants and fish could handle 82-83 or not . as iam learning to this plants keeper aquarium i cant tell you much , but i been keep african cichlids malawi for a while now .they can handle the hight temp really good , last week when it so hot here , my tank temp bump up to about 84. just like when my fish got ick , i bump the temp up to 86-88 with the air stone , they lived. IMO 82 is not somethings we need to worried about !


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post #8 of 12 (permalink) Old 08-15-2009, 07:27 PM
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How close are the lights to the tank? Can you raise it up a little?
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post #9 of 12 (permalink) Old 08-15-2009, 10:58 PM Thread Starter
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/\ /\ Good idea - I could raise them up a couple of inches. They are about 7 or 8 inches off the water now. I think I will lower the lights to 240 for a couple of days and see how the tank responds.
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post #10 of 12 (permalink) Old 08-16-2009, 06:28 PM
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My 125 has stayed pretty hot this summer, a lot of days it is in the low 80's with no problems. I think you are fine.


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post #11 of 12 (permalink) Old 08-21-2009, 01:31 AM Thread Starter
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I turned it back to 240W and the temp has stabilized at 79. The plants seem to be doing fine under less light - still balancing the Co2 and ferts w/ the lower WPG.
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post #12 of 12 (permalink) Old 08-21-2009, 07:03 AM
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I have a discus tank that has Rummynose and cardinal's in it and I keep it at 84-86F all the time...so your tetras are safe, and im sure the temp swing is gradual so i wouldnt see a problem with it if your plants/fish are thriving.
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