Review on 🐠 REDGO Silent 2 Air Bubble Disk Stone Aerator for Aquarium, Fish Tank, Pond Pump, Hydroponic Oxygen with 2M Silicone Tube by Monica Nixon

So one side is pushing air out and the other side is not. Bought this for 2 small DWC hydroponic lettuce. Good thing I only had one bag now. I think next time I will have to buy another brand. I don't want to return it because I wasted my time growing seedlings to throw in my bag. The thing is quiet, but not fully functional. Don't buy it if you don't have time to return it. Maybe the seller will fix that. If so, I'll post an update.