I personally drip acclimate everything for as long as possible. I also use a small heater and powerhead so I can temp match that way. I try to acclimate for a minimum of two hours. The exception is sps
coral. I leave them out of water for 5 minutes then they go straight into the tank and start on the sand or close to and gradually move them up. The reason being that sps
secrete a slime coating to prevent drying out at low tide. This slime seals them in and gradually dissolves off thus acclimating them.