Don’t like seeing frag plugs in your aquarium? I can’t blame you. After all, they aren’t natural and really distract from the look of the coral. Additionally, the corals will grow over the plugs which also looks quite unnatural. To remedy this, remove the coral from the plug if possible, even if you leave a little bit of coral still on the plug. A more involved route would be to drill countersunk holes into the rocks in your tank, allowing you to put the plug into the hole without it looking so awkward.