17 of 19 people found the following review helpful
SuperFish Nano Heater,
This review is from: SuperFish Nano Heater Length 17cm 50W 0-30L H71 (Misc.)
This product is amazing for the fluval edge. My tank temperature never ever has dropped below 26 C. Also smaller than normal heaters. Note that when you first switch it on the light is indicated, but after it switches off. This is normal I emailed them about this. It only heats up when it needs to. A common feature of fish tank heaters.