Marineland Visi-Therm Submersible Aquarium Heater, 200 Watts

from Tetra

Had it for a week and a half and it filled with condensation and quit working. My tank, canister filter and power head are all Marineland and have been very happy, but this Marineland product let me down.

from SDGrilli

I bought the 300 watt heater, set it to 72 degrees and two days later my water temp was 100 degrees and all my fish were dead. This was a recommended heater from Petsmart. It is tough when you have had a healthy aquarium for 8 years and in two days the entire system is wiped out. The loss is f...

from SarahSK

I bought this 5 months ago and it worked okay, but it ran very hot. Then I noticed an extreme amount of condensation inside. I returned it because condensation shouldn't happen that soon. It's been less than a day and it's already beginning to have condensation. I am very unhappy with this product.

from jclaib

I've purchased two and both have condensation INSIDE the unit within a week. This is extremely worrisome to me.

from Tehhotrod

I've had this heater for a little over ~7 months now and it worked great. Until recently I noticed my fish getting lethargic. I felt the water and it was extremely cold. The heater has not warmed up even after unplugging, turning up the heat and down and I believe it has failed. It hasn't even be...