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Product Reviews
5493 reviews on 1118 products!

ProductsTemperature ControlHeaters
Rena Cal Top Light Heaters
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Product Description:
Rena Cal Top Light HeatersRENA Submersible Heaters has a temperature control mechanism which is computer-calibrated in water. The top light excel features illuminated temperature readings on both top and side of heater, plus a 500-micron solid-silver contact thermostat eliminates contact welding that causes overheating. RENA Submersible Heaters have a high thermal diffusion for quicker, more efficient aquarium heating. When choosing the correct size heater, a standard rule is to use five watts per gallon of water.
Product Specifications:
Comes in 50, 100, 150, 200, and 300 Watt sizes.
User Ratings: (37 reviews)
Overall: 5.99
Value/Cost: 5.95
Effectiveness: 5.65
Quality: 5.68
Ease of use: 6.70
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Found: 37 reviews Page  1 3 - View all
nitroracer has used this product for 1-3 Months.
Overall Rating: 4.75/10 March 24, 2005
200W model ina 50 gallon tank.

This heater was VERY dissapointing. Sold to me by a chain store as being a great heater and was on sale.

The heater can't hold temp with 3 or 4 degrees... it slowly fluctuates up and down all day long. The temperate control dial is totally inaccurate.

Mine didn;t break but I replaced it with a Hydor for less money (the Hydor is GREAT.)
HornPlayer54 has used this product for 3-12 Months.
Overall Rating: 5.5/10 February 22, 2005
My 300W lasted almost a year, but the thermostat was VERY inaccurate and I would have expected this heater (in a 90g) to last longer. It broke on me, overheated, and cost me a fish! I won't buy another one.
SnappingTurtle has used this product for 0-1 Month.
Overall Rating: 4.75/10 February 6, 2005
"Not all its boasted to be"
Frankly, the thermostat, which promises ease of use, is a nightmare. I have cheaper heaters with no degree settings that are much easier to use. A big disappointment.
Very Fishy has used this product for 0-1 Month.
Overall Rating: 2.75/10 November 4, 2004
"Bad experience"
I bought 2 of these heaters and both of them leaked and shorted out within a week. I would not recommend these to anyone.
keeta has used this product for 1-3 Months.
Overall Rating: 7.25/10 October 30, 2004
"Its a good heater"
I have a 300 Watt heater and it seem to hold the temp just fine. Its about 3 deg off, but once you get it set it works good. Love the way it hides well in the back of the tank. Its not the best heater for the price but still one of the better ones.
cfmfishkid has used this product for 0-1 Month.
Overall Rating: 1/10 July 20, 2004
"dont buy MINE leaked"
With i a day after i bought mine it leaked. i will never waste my money like that again
pseudoZEBRA has used this product for 1-3 Months.
Overall Rating: 5/10 July 9, 2004
"Nice to look at & Easy to use!"
I use a 100w in my 20 gallon long. I have no complaints. It is much better than the wispers and aquatic gardens.
Something Fishy has used this product for 1-3 Months.
Overall Rating: 7/10 July 8, 2004
" Not perfect"
I have a 50W RC in a 10G tank. The problem i've experienced is that the temp is always higher than where i set it at. I had to set the dial at 70F in order for the tank to be 78F. It has stayed at that temp since but the dial/thermostat is inaccurate and i had to figure out on my own that it had to be set lower than it reads.
nehil has used this product for 0-1 Month.
Overall Rating: 1.75/10 July 7, 2004
"Very inaccurate and unreliable!"
I've had mine for 2 weeks now. Temp is all over the place. Set dial temp at 76, actual tank temp 81.7, room temp is 75. Adjusted setting down to 72. Heater light came on with tank temp still above 81. Most inaccurate, unreliable product I've purchased in years. I'm taking it back today.
ray375 has used this product for 1-3 Years.
Overall Rating: 8.5/10 September 24, 2006
"It is good."
Before, I use a Visi-Therm Heater (100w). But it leak water inside after 2 months use. So I replace this Rena Cal Top 150w. I like it! Very good builted and fancy look. Keep temp constant. I am so happy. But, the temp setting is not accuracy. I set on 71F but give me 73F. 2 degree difference.
FLIP has used this product for 3-12 Months.
Overall Rating: 8.5/10 June 6, 2004
I have a 200w heater and it is submerged in the water. There is no problems with this heater and it is easy to use. Just set the tempeprature to your liking and then place into the tank.
Auballagh has used this product for 1-3 Years.
Overall Rating: 7.5/10 December 19, 2003
"One Good - One Bad....."
Had one that would NOT shut off! After six months in operation it actually got 'stuck' in the ON position. Not good - and fortunately, no fish got fried. The other one has been in a sump for 14 months - and has given me no problems....... yet.
tilapia1992 has used this product for 3-12 Months.
Overall Rating: 2.75/10 December 6, 2003
"terrible heater"
One day I noticed that my Rena heater wasn't working so I took it out and at the bottom the glass fell of.It was really bad and my temp. was at 70 degrees.the cheaper Hagen heaters work way better and I would never suggest this heater to anyone!
SanFranFan5 has used this product for 1-3 Years.
Overall Rating: 7.75/10 November 13, 2003
"Ol' Reliable"
This is my second RenoCal heater. The first one broke to my doing. Did a water change and forgot to take it out (I did not have it sumerged), and just shattered. Kinda cool actually! So I had to get another one, and now I have this one sumerged completely. Never had to touch it yet! Adjusting the temperature is tricky as first, but you have that with any heater. Just follow the directions and you'll be fine. Highly recommend this product.
ZUKABAGA has used this product for 3-12 Months.
Overall Rating: 9.75/10 November 8, 2003
Have 2 300w on my 125 gallon and they work great!
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Ratings are submitted by Cichlid-Forum users based upon their own subjective views and do not necessarily reflect the opinions of Cichlid-Forum.com. CF disclaims any responsibility for the accuracy of information contained in reviews submitted by users, or for any damage or liability arising from the content of any review appearing on Cichlid-Forum.com. All product information on this site, including descriptions and specifications, is based soley on information made available by manufacturers. CF disclaims any responsibility for this information or the products listed. Product information may be inaccurate and is subject to change without notice. You should confirm all information before relying on it by contacting either the manufacturer or vendor with any questions about the products or the information presented.

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