im looking for a good frag plug recipe. i thought there was one on garf but that site is such a nightmare to navigate i gave up. any help would be sweet!
Portland number 3 cement, and aragonite sand or crushed coral.
Mix more substrate then cement , but not so much as to make them brittle. mix to desired consistancy and let them set up for 24 hours. then cure them in freshwater for a week. Then salt water for a week.
DO NOT ADD ALL THE PLUGs AT THE SAME TIME TO YOUR SYSTEM IF YOUARE MAKING A LARGE BATCH. ONLY a few eachweek, especialy if its a small system.