About 33,000 heaters were previously recalled in August 2014.
An electrical problem with the aquarium heaters poses a risk of fire or electrical shock to the consumer, the company and U.S. Consumer Product Safety Commission said.
The firm has received 13 reports of incidents, including four reports of minor shock, seven reports of the water tanks overheating, and one report of property damage from an electrical shortage resulting in fire.
This recall involves all 50-, 100-, 150-, 200-, and 250-watt Top Fin brand plastic aquarium heaters sold between August 2014 and April 2015 with model numbers: HT50, HT100, HT150, HT200, or HT250.
The aquarium heaters were sold only at PetSmart stores nationwide from August 2014 to April 2015. The cost was between $25 and $40.
Consumers should immediately stop using the recalled heaters and return them to any PetSmart store for a full refund, the company and commission advise.
For more information, call PetSmart at 888-839-9638 from 8 a.m. to 5 p.m. MT Monday through Friday, or visit the firm’s website at www.petsmart.com and click on “Product Recalls” listed under “Shop With Us” category.