Temp's High

Hello, I have a 24g jbj nano. It is stocked with about 20lbs of figi rock, and 10lbs of arag sand. It has a six line wrasse, serpent star, and a diamond goby in it. The temp's are always around 83 during the day. I have lost a couple corals because of this temp. Is there any suggestions on how i can reduce the temp of the aquarium? Thanks, its much needed as I believe this is hindering the future growth of the tank.

 

chiller ? shortening your light cycle ? frozen water bottles ?

 

Well first I would open up the feeding slot to let some temperature out. You could put some mesh over it if you are concerned about fish jumping. Try lowering the amount of hours you have your lights on by an hour or so. You could leave your lights completely off for one day to let it cool down a bit. (Remember, the ocean has cloudy days too.) If you have a real big problem with it reaching higher than normal I put a few ice cubes in a baggy and put the baggy where the filter is to cool down the tank a bit, but that is a short term solution. If it is really that big of a deal all the time I would try to get some better ventilation by having more air current in there. (Bigger fans, drill holes, etc.) You could also try dropping the temperature in the room a bit. (Turn on the ac, leave the door open, etc.) I hope some of these may help.

 

Im kinda trying to stay away from having to purchase a chiller but its starting to look like I might have to. However, if I do id just rather upgrade to a bigger tank... Oh, how the cycle goes....

 

i would add more vent to your lights, i had the same problem i just built a box for my two 175w mh's to lift from the tank.. but i have a friend with a simular tank with the same problem, he just moved it underneath an air vent and pointed a fan over the tank, kinda lame but it worked.

can you upgrade maybe a fan or add an additional? if your willing cut out some more ventage =)

 

Fan on the water, you will have to top off more, But it's the must cost effective, and quickest.

make sure your heater is not calibrated wrong. I have a heater that thinks 74.. is 80.....

Make sure its not near a window, or another heat source.

 

my AGA heater is the same way.... and if its getting too hot without a heater even on (like my friends 14g nano cube was) you can just increase the air circulation over the water and the lamps with small fans. check into computer fans. you can generally get 12v fans for cheap. i dont know how handy you are, but you can probably cut the top of the hood and modify a new housing for some mini-fans with a 12v supply.

also if the tanks off in a corner of a room where there might not be much ambient air circulation you could setup a standard box fan or one of those mini-fan tower things and point it that direction?

 

Computer Fans: Newegg.com - Computer Case Fans, Case Fans, LED Case Fan, 120mm Case Fans, 80mm Case Fan

 

Step 1:
Check your heater like mentioned. Owned 3, and all 3 were wrong.

Step 2:
Open the front and back lids like mentioned. This will get a lot of heat out by evaporation. To aid this process, also make sure your powerhead is disturbing the surface of the water. When it's rough, it works best. I totally took off the front feeding cover from my 29G biocube

Step 3:
Upgrade all your fans for better air movement. I have the 150watt HQI hood for my biocube, so increasing the airflow was a must. Attached are some pics of my modified hood. Where I took the intake fan off, opened the intake grill, and put a monster blower fan. Also upgraded the fans blowing across the MH light, and the exhaust fan.

Before doing the above my temp would swing from 78-83 within a few hours. After the modifications I'm never over 81.