222K views · 1.9K reactions | The plumbing of the 900 Gallon Drop Down Tank has begun ‍ stay Tune for Friday YouTube Video Drop! | Polo Reef by Andrew Sandler | Facebook

Did you know... the coral reef inside the Giant Ocean Tank is hollow?! 🤯 While it looks like a thriving coral ecosystem, the reef structure is actually made of fiberglass and rubber that is supported by concrete slabs, columns, and even plumbing to help create natural water flow. The reef has two access hatches (one tucked under the sand up top and one hidden in the cave below), which divers use several times a year to climb inside the reef for inspections and maintenance. Yep, they actually go

1.4K views · 39 reactions | The weedy Aiptasia can be a tricky weed for people to control in their home aquariums. Here is Chris with five tips and tricks to remove this pest from your tank  At Reef HQ we primarily use a biological form of control on these pests. Most shrimp 戀 and butterfly fish species (especially the klein butterfly fish) will remove this weed for us by eating it  | Great Barrier Reef Aquarium | Facebook