is this what I get for buying cheap thermometer?

mraafat · 02/11/2006, 01:16 PM

Any suggestions are appreciated, I have a 120 gallon tank that I am starting, and it is currently filled with water, rocks, and 4x powerhead.
Last week I decided to purchase one of those $2 glass thermometers and threw it into the tank (one of those that sinks to the bottom).
I live in CA and the weather is usueally nice, but even though it is rather cool in the morning the thermometer reads a temp of 78 degrees and this is without a heater on or any lights. When I set my Jager heater to 79, the temp read 87. When I turn on 1x MH the temp read 85. Is the thermometer off? If not, what could be causing this heat..4x maxi jets? I lived in Indiana and summer were very hot, but the tank still needed heating. Oh, and the tank is not near any window or household heater. Unusual........

corals b 4 bills · 02/11/2006, 01:28 PM

Do you have lights on it yet? temps are usualy a bit higher at the top but not that much. Pumps will create half of the heat a tank will receive, lights the other. I like to use external pumps on a closed loop.

02/11/2006, 01:16 PM	#1
mraafat Registered Member Join Date: Nov 2005 Location: California Posts: 228	is this what I get for buying cheap thermometer? Any suggestions are appreciated, I have a 120 gallon tank that I am starting, and it is currently filled with water, rocks, and 4x powerhead. Last week I decided to purchase one of those $2 glass thermometers and threw it into the tank (one of those that sinks to the bottom). I live in CA and the weather is usueally nice, but even though it is rather cool in the morning the thermometer reads a temp of 78 degrees and this is without a heater on or any lights. When I set my Jager heater to 79, the temp read 87. When I turn on 1x MH the temp read 85. Is the thermometer off? If not, what could be causing this heat..4x maxi jets? I lived in Indiana and summer were very hot, but the tank still needed heating. Oh, and the tank is not near any window or household heater. Unusual........

02/11/2006, 01:28 PM	#2
corals b 4 bills Registered Member Join Date: Jan 2005 Location: San Francisco Bay Area (Belmont). Posts: 2,381	Do you have lights on it yet? temps are usualy a bit higher at the top but not that much. Pumps will create half of the heat a tank will receive, lights the other. I like to use external pumps on a closed loop. __________________ Reefkeeper - (ref-ke-per) n: Individual obsessed with placing disturbing amounts of electricity and seawater in close proximity for the purpose of maintaining live coral reef organisms. Current Tank Info: 29 gallon Bio Cube, HQI 150 watt Nanotuner~Vortech MP10W ES~Arctica Chiller~AC II~Tunze Osmolator ATO~ Tunze 9002 skimmer W/In Tank Cup~ Korallin Reactor W/PH Monitor~ Korallin Denitrator~APC Back-up~Phosban/Carbon Reactor.