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-   -   heater in sump (http://www.canreef.com/vbulletin/showthread.php?t=37133)

Salmon King 11-18-2007 07:40 PM

heater in sump
 
Does a heater in sump work.My heater seems to be on all the time even though my tank is always 76-78.My thought isthe water in the sump passes through so quick does it really have time to heat the water or do all the pumps/power heads actually do the trick.Any comments would be appeciated.

Delphinus 11-18-2007 07:51 PM

IMO, it has a lot to do with the total system volume, the amount of turnover flow, and the wattage of the heater.

mark 11-18-2007 08:30 PM

Would think if heater wattage was enough for volume, with any sort of flow, system would eventually reach a equilibrium.

btw, I have a 300w heater in sump, ~200g system volume, ~1000gph through sump and heater cycles.

Salmon King 11-18-2007 08:37 PM

heater
 
I keep a double computer fan on all the time to keep temp down and keep heater going to keep temp up.Do you have a fan or chiller going all the time to

Bulltrader 11-18-2007 08:44 PM

I have a 300watt heater in the sump for 125gal and it is mostly off other than when the autofill dumps some water.

mark 11-18-2007 08:52 PM

Having a fan on all the time probably explains why the heater is always on.

I'm running a controller for both fans and heater. One won't be on if the other is.

Skimmin 11-18-2007 11:24 PM

sump heater
 
I have a reefkeeper which controls my heat with a 500w titanium heater. The heater is set in the skimmer compartment of my sump. I have a bypass style refugium. I took the temp sensor and set it in each compartment of the sump and also in the main tank. It showed a temperature difference of 0.1 degrees so I'm thinking nothing to worry about.

Salmon King 11-19-2007 01:18 AM

heater
 
Thanks very much for your replies

Murminator 11-20-2007 03:26 PM

I have 2 heaters in my sump and I don't think they have ever turned on :eek:

Could you try putting them in your overflow maybe that will work better

Salmon King 11-20-2007 11:23 PM

heater
 
A person told me to set the heater a couple degrees below my low temp.(76) This way the heater safeguards against the temp going so low it kills livestock.


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