Accessory USA AC/DC Adapter for AquaIllumination AI Hydra Fifty Two 52 HD LED Lighting System LT-AI-HD52HDB LT-AI-HD52HDW Aqua Illuminations 120W Power Supply Charger Mains PSU

I received 2 defective adapters with very loud hissing sound and one of the light flashing on and off. I bought them to replace the original adapters for my AI hydra 52 I contacted customer service. They responded quickly and resolved my issue with a full refund. Accessory USA is a decent vendor. I gave them 4 star for that. I was lucky that I have 4 T5 bulbs as supplemental light so the corals are doing ok while I waited for the replacement order from Amazon.