If you put in live sand you will need to premix the water before adding it to the tank, otherwise everything in the sand will die. I filled my 29 with sand in place and i put a shallow tupperware inside the tank, made it level and then used my siphon tube to add the water the premixed saltwater in. having it go into the tupperware and then flow out the four sides minimized the amount of sand that was kicked up. Settled in less than a day. I plan on doing the same with my 110. Use a ladder or something taller than the tank to rest jugs or buckets on to feed the gravity siphon.