We have tried many different frag plugs over the years and our choice was to sell the frag plugs we use in our aquaculture facility as it has proven to be the best all around frag plug. We carry Alternative Reef frag plugs and frag disks in various quantities. These frag plugs are ceramic and require zero curing prior to putting into your reef system.
Large frag disk = 1 3/8"
Price is for a 25 pack of these large frag disks.