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Product Reviews
5493 reviews on 1118 products!

ProductsTemperature ControlHeaters
Aquarium Systems Inc. Visi-Therm Heaters
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Product Description:
Aquarium Systems Inc. Visi-Therm HeatersVisi-Therm automatic aquarium heater has a unique direct-reading temperature setting feature, which eliminates guess work and makes presetting temperatures very simple. The desired temperature is indicated on an easy-to-read thermometer-type scale and is accurately maintained by the precision thermostat. Visi-Therm is completely waterproof and totally submersible. All these features make it the choice of experienced aquarium hobbyists.
Product Specifications:
Available in 6-inch length 25 & 50 watts, 10-inch length 75 & 100 watts, 12-inch length 150 & 200 watts, and 14-inch length 250 & 300 watts
User Ratings: (47 reviews)
Overall: 7.16
Value/Cost: 7.34
Effectiveness: 7.09
Quality: 6.45
Ease of use: 7.79
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Found: 47 reviews Page  2 3 4 - View all
smitty has used this product for 3 Years or More.
Overall Rating: 9.75/10 July 3, 2011
"Good Product/ Great Warranty"
The fact of the matter is that every company that has made heaters have seen there share of horror stories related to there product. It seem as though no matter what technology improvements they come up with they will not be able to make the perfect heater. Just like any other product they are destined to fail at some point. The Visi Therm is one of very few heaters sold that come with a lifetime guarantee and for the price it simply can not be beat. I recently sent several back that I have had over the years among my 3 tanks which total 9 heaters being used at one time. They replaced them without any problems. You can not ask for more than that. They stood by there product because they said we strive to make a trouble free product for life. Those are very high standards. Which we should come to expect considering what it is that we are caring for not just fish but our pets that we consider part of our family just like our dogs and cats.
neonate has used this product for 1-3 Months.
Overall Rating: 3.75/10 April 28, 2011
Was sent this to replace another recalled Steatlh, and it worked for two months. Indicator light would work but it wouldnt heat. 3rd Marineland heater being sent back to manufacturer for refund in past two months.
CrypticLifeStyle has used this product for 3 Years or More.
Overall Rating: 8.25/10 January 14, 2010
"It served it's purpose"
Had a 200 watt that lasted 5 years...It just recently died, when i took it out of the tank & the glass tube shattered...After such a long time i'd say i got my moneys worth...
Ali1 has used this product for 1-3 Years.
Overall Rating: 3.5/10 December 30, 2009
"Overcooked my fishes"
Garbage product. Any heater that overcooks your fish tank is unreliable, especially after one year only. Seems like many other people are having this problem with this particular brand. Stay away from visitherm.
cturner has used this product for 3 Years or More.
Overall Rating: 9/10 December 21, 2006
"Not too shabby!"
I've had 3 of these heaters in 3 of my tanks and I have never had a problem. On the other hand I have tried different heaters and have had problems with them. If your worried about the glass they now make plastic guards for these heaters.
The Lorax has used this product for 3-12 Months.
Overall Rating: 3/10 November 27, 2006
"Avoid this heater!"
I purchased two of these heaters for separate tanks. The glass is extremely brittle, and one broke while I was gently cleaning it. The second ramped the heat in my tank up to 86 F without warning, almost frying my precious fish and their fry! Needless to say I will never buy one of these again, and I hope you don't either!
malawiguy has used this product for 1-3 Years.
Overall Rating: 6.75/10 October 30, 2006
"Breaks too Easily"
if these are left even the slightest bit out of water they overheat and the glass on the heater breaks, almost electricuted my fish!
DaddyWiehe has used this product for 3-12 Months.
Overall Rating: 2.25/10 April 28, 2006
"Never again"
I had one in my 55gal and it broke. Wife freeked out thinking the fish were going to swim in it and get cut, had to get it out before i left for work and install a spare. I have two theo's in my 125gal alot easier to adjust the temp and no problems as of yet very happy with them.......Stay away from these from reading other replys im not the only one who doesn't like them.
opima has used this product for 1-3 Years.
Overall Rating: 3/10 January 24, 2006
"not a good heater"
i had been using ebo-jager heaters in all my tanks, but at the recomendation of a friend who had kept fish for well over 30 years i bought one of these. the temp control switch was very hard to turn, it would not keep the tank at a steady temperature and i always had to adjust it 5-8 degrees higher then what was required for the fish just to acheive the correct temp throughout the tank. will not use them again, ebo-jager is much better in my opinion.
Regulator75 has used this product for 0-1 Month.
Overall Rating: 6.25/10 January 3, 2006
"Not tough enough"
I have gone through 2 of the 150 watt heaters. My Silver Tip sharks have broken both of them. (All within 2 weeks of buying them).
I will never buy a glass heater again. Infact I have 2 Stealth (250 watt) on order right now. Reinforced plastic is the way to go.
AQUATIC DESIGNS has used this product for 3-12 Months.
Overall Rating: 3/10 November 22, 2005
"This heater has one of the largest return rates of all brands"
I own a store and have had a large number of these returned due to malfunctions and defects. The seals seem to go frequently and the stick on and kill fish on a regular. I will not be recomending these P.O.S. heaters.
pickles has used this product for 3 Years or More.
Overall Rating: 10/10 October 28, 2005
"Great Product!"
I have 2 of these heaters going on 4 years old never had a problem.
Kinguni has used this product for 3-12 Months.
Overall Rating: 9.75/10 October 12, 2005
"Great heater!"
I currently have 2 of these heaters in use and they are both great. Wal-Mart sells their own re-branded version for half of what other heaters cost.

I started using these heaters after some local aquarists turned me on to them after the seals went on 2 Ebo-Jager heaters I had owned. As advertised, the heater is accurate within 1 degree and once set my tanks are a perfect, steady temperature. I'd recommend these heaters to anyone.
t_chelle16 has used this product for 3-12 Months.
Overall Rating: 7/10 September 13, 2005
"Not bad"
Pretty good heaters except my fish kept breaking them.
BURGH has used this product for 1-3 Years.
Overall Rating: 3/10 June 7, 2005
I have 2 of these units and they seemed to be very good untill this past weekend. It looks as if water might have got in side some how. To make along story short the water tempature rose to over 86 degrees not sure how hot it really got. But I came home from work and my 2-female and 1-male Brichardi and approximatley 200 babies were all dead. I have had the adults for a year and they have been spawning constantly since Febuary. I got the water tempatute down to 84 but it also killed a ink fin Calvus that was beautiful. I will be taking a look at the other one, I don't know why it would malfunction after a year of use.
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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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