[jon in alberta]

Originally Posted by reefwars

alot of people put eggcrate under there rock and then fill in and around with sand afterwards...

Thanks reefwars. you mention in another post about glueing down the eggcrate. If I get one big piece I presume that will not be necessary (the rock will hold it down). but just in case what kind of glue is ok?

also, should I be treating the water to remove organochlorines?

Thanks.