Hydor Theo heaters = Coral Killers
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Forum Name: General Discussion
Forum Description: Posts that don't fit in any of the other categories.
URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=21667
Printed Date: February 23 2026 at 10:00am
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Topic: Hydor Theo heaters = Coral Killers
Posted By: cl2ysta1
Subject: Hydor Theo heaters = Coral Killers
Date Posted: November 07 2007 at 9:22am
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So i have tried hooking up three of these heaters now. all ones that we had used on our tanks before. THEY DONT SHUT OFF!!!! they just keep heating. I've never had a brand so defective. I have tried turning them down to 72 and they are still on. All three. anyone else have similar problems with these heaters???
I usually use Ebo Jaeger. ------------- I <3 Boxers Achilles tang lover |
Replies:
Posted By: Mark Peterson
Date Posted: November 07 2007 at 9:35am
Ebo Jaeger ------------- Reefkeeping Tips, & quick, easy setup tricks: www.utahreefs.com/forum/forum_posts.asp?TID=9244 Pay it forward - become a paid WMAS member 
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Posted By: jeffras
Date Posted: November 07 2007 at 10:25am
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I have one that I bought on ksl that does the same thing. It is usable as long as you have it on a controller. It is strange because I have the Hydor External Inline heater and it works great. I have never had a problem with it. I wonder what is wrong with this line? Have you tried emailing hydor? They have excellent customer service. ------------- Jeff Rasmussen |
Posted By: cl2ysta1
Date Posted: November 07 2007 at 10:39am
I think i might email them. these heaters couldnt possibly be more than a year old. And all three ofthem did the same thing. So i set up a tank with just water in it to do tests. They are all junk. and now ive got to use small heaters on them until i can get new ones. ------------- I <3 Boxers Achilles tang lover |
jeffras wrote:Posted By: cl2ysta1
Date Posted: November 07 2007 at 10:45am
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well i have emailed them we will see what their response is. I have koralias, their EKOMIXO automatic feeders, but apparently their heaters arent so hot. ------------- I <3 Boxers Achilles tang lover |
Posted By: Shane H
Date Posted: November 07 2007 at 10:47am
| Heaters = BAD NEWS. |
Posted By: cl2ysta1
Date Posted: November 07 2007 at 11:11am
how do you keep your aquarium temp constant? ------------- I <3 Boxers Achilles tang lover |
Posted By: cl2ysta1
Date Posted: November 07 2007 at 11:12am
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if there is a better way i'd love to know! ------------- I <3 Boxers Achilles tang lover |
Posted By: Dion Richins
Date Posted: November 07 2007 at 11:14am
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Neptune. ------------- http://www.customaquariumfurniture.com" rel="nofollow - Bad "censored" Cabinets Best quality in the valley! He is one sexy bald guy, even with out a finger!(MAC) |
Posted By: Mike Savage
Date Posted: November 07 2007 at 11:23am
I second that.
Mike -------------  |
Posted By: hairmonkey
Date Posted: November 07 2007 at 9:17pm
------------- "Logic is your friend" west side salon 250-5314 8370w 3500s magna. |
Posted By: BobC63
Date Posted: November 07 2007 at 9:25pm
Talk about a remote chiller?  ------------- - My Current Tank: 65g Starfire (sitting empty for 2+ years) - * Marine & Reef tanks since 1977 * |
Posted By: Shane H
Date Posted: November 07 2007 at 10:06pm
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how do you keep your aquarium temp constant?
Room temp and lighting. I think I've heard more horror stories caused by heaters than any other piece of equipment.
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Posted By: Adam Blundell
Date Posted: November 07 2007 at 10:59pm
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Heaters????
I'm with Heil... I haven't had a heater in my tank for years.
Now fans on the other hand... yeah I've got plenty of them running.
Adam
ps- my tank is currently 84 degrees ------------- Come to a meeting, they�re fun! |
Posted By: Mike Savage
Date Posted: November 07 2007 at 11:02pm
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I don't have a heater on my 34 gallon but it has been getting down to 75 at night.
Mike ------------- |
Posted By: ReefBones
Date Posted: November 07 2007 at 11:24pm
Heck I try and maintain my temps at 75! ... ------------- 140 gallon Reef 65 gallon Reef 55 gallon Aggressive www.thesalttank.com 801-865-6074 "encourage other divers and sea enthusiasts to take nothing but pictures and leave nothing but bubbles" |
Posted By: Jake Pehrson
Date Posted: November 07 2007 at 11:28pm
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No heater here either. Haven't used them for years. ------------- Jake Pehrson Murray http://coralplanet.com" rel="nofollow - coralplanet.com http://utahbeeranch.com" rel="nofollow - :) |
Posted By: Corey Price
Date Posted: November 08 2007 at 8:42am
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I am anti-heater, but I need one now since my tank is in the basement exclusively and the tank got down to 66 degrees.
I have two Theo heaters, and they do stick on after a while. POS, IMHO. Seriously. Get an Ebo if you want to, but I'd ditch the heater if you don't and just control the tank's upper temperature swings. Controllers don't make heaters bulletproof.
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Posted By: Dion Richins
Date Posted: November 08 2007 at 9:08am
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"Controllers don't make heaters bulletproof."
True...however, I use a 800w titanium with a remote control module. If the Neptune's probe goes out and leaves the heater on the heaters own control module is set at 2 degrees higher than the Neptune to shut it off on its own.
Bulletproof? No but it is a line of insurance.  ------------- http://www.customaquariumfurniture.com" rel="nofollow - Bad "censored" Cabinets Best quality in the valley! He is one sexy bald guy, even with out a finger!(MAC) |
Posted By: Mike Savage
Date Posted: November 08 2007 at 9:21am
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I used a Via Aqua Titanium on my 120 set up just like Dion said. It worked well and I had no problems.
Mike ------------- |
Posted By: BobC63
Date Posted: November 08 2007 at 9:48pm
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How do you guys run "heaterless" and not have big temps swings... especially in the colder weather?
My main floor house thermostat is set to go down to 65F overnight... I have (2) 300w Ebo Jagers in the sump heating a total of about 140g of water volume. They are set at 77F. The lowest my tank gets is 76.8F at about 8AM. Once various lights start kicking in, my temp gradually climbs to a high point of 80.2 late afternoon... that's a 3.4F total swing, which I am OK with (and the tank inhabitants seem OK with it, too)
Point is, maybe 2 weeks ago I inadvertantly left the heaters unplugged overnight after a WC. The next morning, the tank temp was all the way down to 72.1F!!!
Going from 72.1 - 80.2 would be a 10 degree swing every day
 too much IMO...So...how do you "heaterless" guys avoid those kind of low temps (and temp swings) when the lights are off w/o a heater???
------------- - My Current Tank: 65g Starfire (sitting empty for 2+ years) - * Marine & Reef tanks since 1977 * |
Posted By: Mike Savage
Date Posted: November 08 2007 at 9:51pm
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looks more like a 8.1 degree swing but still more than I would want. Mine stays within 4 degrees or less and I am happy with that. Our thermostat is set at 70 degrees 24/7 this time of year.
Mike ------------- |
Posted By: BobC63
Date Posted: November 08 2007 at 9:58pm
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You're right Mike
Me the Math guy, too
 But I get the idea. Your house temp is not so low, so your tank temp wouldn't go too low...
Got It ------------- - My Current Tank: 65g Starfire (sitting empty for 2+ years) - * Marine & Reef tanks since 1977 * |
Posted By: Jared
Date Posted: November 09 2007 at 11:12am
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Seti posted a very simple DIY temperature controller a while back. It uses a household thermostat and a relay, it works super well as it can turn kill power to your heater once the tank hits a certain temp. You can even use it to turn some fans on.
------------- Jared Neilsen Lehi, Utah |
Posted By: Shane H
Date Posted: November 09 2007 at 3:27pm
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My thermostat in my previous house was set about 70 in the winter and about 74 in the summer. The tank temp ran about 79-82 in the summer and 76-79 in the winter. I didn't experience large temp swings without a heater on my display tanl (2x175w MH, 2x140w VHO).
My smaller tank in the basement was a 65 gallon with only PC lighting. It stayed about 72-76 year round w/out a heater.
I don't have enough experience in my new house yet - in fact, my tank is still on the concrete in the basement! Temp is about 75 right now.
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