![My Tetra 20-30 gallon submersible heater light keeps turning on and off. It's pre-set temperature is 79 degrees, and my tank is at 75. It is a new heater. I put it My Tetra 20-30 gallon submersible heater light keeps turning on and off. It's pre-set temperature is 79 degrees, and my tank is at 75. It is a new heater. I put it](https://external-preview.redd.it/7IaeTciIzU3qCPiPbY8J01WLmXR9ak7VXyKASN8fAXA.png?format=pjpg&auto=webp&s=28b397423ef5a9f85d425bbce20dd805321c7f49)
My Tetra 20-30 gallon submersible heater light keeps turning on and off. It's pre-set temperature is 79 degrees, and my tank is at 75. It is a new heater. I put it
![HELP!! i'm doing a water change right now and i put my hand in the tank to move a plant… my heater shocked me!!!! idk what to do is it safe to HELP!! i'm doing a water change right now and i put my hand in the tank to move a plant… my heater shocked me!!!! idk what to do is it safe to](https://preview.redd.it/help-im-doing-a-water-change-right-now-and-i-put-my-hand-in-v0-n9d9eapha3e81.jpg?auto=webp&s=dad6c8684e852115b81f57f474d912b693e603c3)
HELP!! i'm doing a water change right now and i put my hand in the tank to move a plant… my heater shocked me!!!! idk what to do is it safe to
![Is the light on the heater supposed to blink or be solid? Aqueon submersible aquarium heater 150w adjustable : r/Aquariums Is the light on the heater supposed to blink or be solid? Aqueon submersible aquarium heater 150w adjustable : r/Aquariums](https://external-preview.redd.it/Dfi_BejQy7hDu_MZQL940lAxVKXteQykkILn69mhkn0.png?format=pjpg&auto=webp&s=94042f497e8710f5f8dc26ec39c3a07cf8fa4fe0)
Is the light on the heater supposed to blink or be solid? Aqueon submersible aquarium heater 150w adjustable : r/Aquariums
![POPETPOP 400W Aquarium Heater - Submersible Titanium Fish Tank Heaters with Intelligent LED Temperature Display : Amazon.co.uk: Pet Supplies POPETPOP 400W Aquarium Heater - Submersible Titanium Fish Tank Heaters with Intelligent LED Temperature Display : Amazon.co.uk: Pet Supplies](https://m.media-amazon.com/images/S/aplus-media/sc/7fd35e6b-8170-4859-9aac-45c2f2601de5.__CR0,0,1200,1200_PT0_SX300_V1___.jpg)