I am cycling my 15-gallon reef tank. I have a 15-gallon aqueon column tank along with an aquaclear 50 HOB filter along with a 240gph powerhead and 12 pounds of dry rock and 5 lbs of live sand. I have been cycling for about 3 weeks now, but I think I am just going to keep cycling for another month just because in 2 weeks I am leaving for a 2-week vacation so it's just convenient. I think I made a real rookie mistake by not dipping my rocks! Today I was looking at the sand bed and I noticed what looks to be like small pieces of the dry rock on the sand bed (see pics attached). I tried to vacuum them out with my siphon vacuum, but every time I try to it feels like I'm going to suck up a bunch of sand so i kink the hose, and really nothing gets vacuumed out except a bit of sand. If anyone has any tips to effectively vacuum the sand bed that would be much appreciated. Also please help as I don't know what to do about the dry rock pieces on the sand bed. Thanks!


