Key points. 1  Seafloor spreading takes place at midocean ridges and produces basalt, the rock that makes up the oceanic crust. 2  The Mid-Atlantic Ridge and East Pacific Rise are examples of midocean ridges. 3  Midocean ridges reach a typical summit elevation of 2,700 meters below sealevel.
Watering during the day causes a lot of the water to evaporate before it has a chance to be effective. Be sure to keep your sod permit handy in case your city or county officials try to enforce current watering restrictions. You are usually allowed unlimited watering for the first 30 days after a new sod installment.
Posts: 690. I use a GE brand of silicone. On the label it says it will cure in 24 hours, but further down on the label it states  for aquarium use allow 3-5 days before filling. 45g is a lot to risk dumping onto the floor, I would give it a couple of days if possible before refilling.