Nothing but 100% satisfaction. I’ve ordered twice from aqua labs and I ordered the wrong size item both times and they fixed the problem. I was able to ship back and they sent out what I was needed. They only charge you what the shipping cost. They don’t jack up shipping cost. And if you need help with something, give them a call and you can talk to someone that doesn’t mind helping you find what you need. Overall great company. I’ve had 2 friends order after they saw my products and the price I paid.