fishkeeper

fishkeeper Aquarium Heater 1000 W Adjustable Fish Tank Heater with Digital Display Controller Submersible Water Heater with Over-Temperature

$39.99$46.99

51+ bought in the past month

About this item

  • Digital Display Temperature Controller: Heater for fish tank comes with an external led digital temperature controller, simple and easy to operate. The display flashes for heating mode, the display doesn't change for keeping constant temperature and stop heating; press "+" for increasing 1℉, press "-" for decreasing 1℉, 59 and 93 is a cycle, press lower than 59 or higher than 93 will go back to another number
  • Multiple Safety Protection: Heater for aquarium comes with high temperature, low temperature, and dry burn prevention protection. The display controller shows "HH" means the current water temperature is higher than 93℉, high temperature alarm will stop heating; "LL" means the current water temperature is lower than 59℉, low temperature alarm will normal heating; "E1" means the fish heater will automatically cut off the power to stop heating when it is 2 inches away from the water surface
  • Power Failure Memory Protection: Fish pond heater has a memory protection function, when there is a sudden power failure, the controller will keep the previous set temperature, no need to reset, avoiding not being able to control the temperature in time and missing your loved fishes or turtles
  • Quartz Material - Fast Heating: Aquarium water heater is made of explosion-proof quartz glass material and high-temperature resistant Nichrome heating wire with silicon carbide thermal conductive material, safer, faster and longer lasting heating. High quality fine gap ABS heater guard can protect your fish turtle from scalding and the risk of fish snagging
  • Multi-Scene Application: Thermostat fish tank heater is suitable for all kinds of aquariums with a widerange of applications, including saltwater aquariums, freshwater aquariums and tanks with aquatic plants, turtle tanks, fish markets, pond and other places where aquatic creatures are kept. Note: Tank heater must be completely submerged in water to work properly
$39.99
Was $46.99Save $7.00

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Technical specifications
item_weight2.72 pounds
manufacturerfishkeeper
date_first_availableNovember 10, 2023
item_package_dimensions_l_x_w_x_h17.13 x 8.66 x 2.24 inches
brand_namefishkeeper
size1000W
package_dimensions17.13 x 8.66 x 2.24 inches; 2.73 Pounds
best_sellers_rank#48,305 in Pet Supplies ( See Top 100 in Pet Supplies ) #111 in Aquarium Heaters

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Customer reviews

4.4242 ratings
  1. 588%
  2. 40%
  3. 30%
  4. 20%
  5. 113%

Customers say

Customers find the aquarium heater easy to use and appreciate its heat retention capabilities, with one mentioning it kept their pond at 60 degrees consistently all winter.

★★★★★

Just great

C.C.January 16, 2026✓ Verified purchase

Excellent, works just fine for a 10 gal. or an 8.75 gallon tank for a Betta, which I use it for, she loves it, keeps tank at 77-78, is quite small, but perfect for tank, takes very little room, am happy and would purchase another if needed. See how long it holds up and keeps working. Read more

★★★★★

Great heater

CHEFDADDIOOJanuary 19, 2026✓ Verified purchase

Excellent heater! Great thermostat with heater easy to operate Read more

★★★★★

Small pond

kgoodmanDecember 10, 2025✓ Verified purchase

Works great for my small 125 gallon outdoor pond. Easy to change temperature with a push of a button. I attached it to a stake and put a fake rock over it. No issues so far. Read more

★★★★★

Best heater

KarissaJanuary 27, 2026✓ Verified purchase

The media could not be loaded. We live in central NC and we have our 55 gal in ground pond it’s only 12 inches deep and we have 5 fancy fan tail goldfish. I know they’re goldfish, but they aren’t koi and I didn’t want to take any chances letting them freeze this winter. We just had an ice storm and I have a plastic cover over it and I have it insulated so it stays warmer than the air but when the water got down to 47° I was worried so I put the heater in and have it set to 63°. It was 9° last night and the water stayed 63° the WHOLE time. So my fishies don’t have to suffer in the freezing water. We even have a frog that has stayed in there all winter too! We’ve had the heater on for the last few weeks and it keeps my babies comfortable we’ve had no issues with it other than the suction cups on the back sometimes don’t stick so it does fall to the bottom but it doesn’t seem to affect it if I leave it on the bottom. I recommend this heater! Read more

★☆☆☆☆

Stopped working after 2 months

JD FabFebruary 17, 2026✓ Verified purchase

Worked fine for about 2 months, then flashed an "out of water" error code and stopped working despite being fully submerged. Used in a 3 gallon beta tank, which it was rated for, so it didnt burn up from b/c the tank was too big. Despite the instructions being in "chingkish" they weren't totally useless. Of course it stopped working right outside of the return window. My advice is to spend the money and get a better quality one Read more

★★★★★

Still going

DrbenetMarch 12, 2026✓ Verified purchase

Doing the job Read more

★★★★★

Great heater

SPENCERJanuary 28, 2026✓ Verified purchase

Great heater, has low water level warning, customer service is great, Recommened. Read more

★★★★★

love this

RosieDecember 30, 2025✓ Verified purchase

I LOVE THIS HEATER! best i’ve ever used. so far. knock on wood lol I love everything about it.. like how it beeps if the water is too low. and mainly bc this one heater keeps my whole 1000g pond almost all by itself. I have two extra smaller 500s for when it’s really cold (for FL.. they’re tropical fish so I don’t want it below 70 at all.. 78 is the sweet spot) anyway this is very powerful and so far i’m very happy and definitely getting another for next year so I can’t ditch the little ones Read more

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