I've 2 of these in 3/4" since January. Their customer service was awesome, it did prompt me to upgrade from a Sunpole (green) up to a Jebao 10k, running at 100% but that's mostly due to my head pressure, I saw a pronounced change when I upgrade, simply holding my hand in front on them in the tank you can feel the variations in the water. It also makes catching something you accidentally drop in the tank, or fishing out something like molts alot more tedious, but ok. Honestly I see them as a relatively cheap upgrade item that really has no downside.