Magnetic Naturalistic Frag Rack

This is how to make a magnetic frag rack for your display tank. This was made so that you can display your frags on a natural-looking piece rather than the conventional grid-like racks on the market. The disc plugs can easily be replaced with your conventional frag plug.

• Plastilina - https://a.co/d/fBfr00N
• Silicone Molding Material - https://a.co/d/7JEHLRg
• Sculpting Tools - https://a.co/d/dFGvnXT
• Disc Magnets - https://a.co/d/3p1wkvj
• Type 1 or 2 Portland Cement - https://rb.gy/psgbj
• Play Sand - https://rb.gy/6et7u
• Washers
• Real Rock

Begin by gathering all your materials and sculpting the rough shape of your frag rack. This is totally up to you and how you want your frag rack to be displayed in your tank. I don't suggest making arches due to the complexity of later steps with molding.

Use your real rock to press into the sculpture for a life-like texture. You can use sculpting tools as well but, I find that I get a more realistic appearance when using this method.

Choose your frag disc size and use washers to press a perfect cylinder cut into your sculpture.

Lay your sculpture, flat side down, into a container and pour your 2-part silicone in to create your mold.

Place your magnets in the mold where the discs will make contact. Then pour your Portland cement/ play sand mix into your mold.

WARNING: Magnets and metals are corrosive and must be encapsulated in reef-safe silicone.

Next, you will need to make sure that your new frag rack is inert so that it won't change your water chemistry and harm your livestock. After some research and testing, this process can take up to 3 months. Just be sure to isolate your frag rack in a controlled environment and test for alkalinity. If the frag rack continues to raise the alkalinity, it is unsafe for your display tank.