Keeping Beautiful Macro Algae Tanks with Courtney Keeps

In this episode of Reefing Radio, we’re joined by Courtney Keeps — a hobbyist known for his beautifully designed macroalgae reef tanks, natural daylight-style aesthetics, and thoughtful approach to aquarium design.

Courtney shares his journey from freshwater aquascaping into the reefing world, including how planted tank design principles, gardening, and a love of natural aesthetics have shaped the way he approaches marine aquariums. We discuss what the reefing hobby can learn from aquascaping — from intentional layouts and repetition to colour placement, depth, restraint, and designing tanks that feel cohesive rather than cluttered.

The conversation also dives deep into macroalgae systems: how to grow them successfully, nutrient management, lighting, dealing with nuisance algae, species that thrive (or crash), and why macroalgae tanks behave very differently from traditional coral-dominated reefs. Along the way, we talk about natural seawater, freshwater influences on reefing, blackwater tanks, nano systems, and the challenge of balancing aesthetics with practicality.

Courtney also walks us through his latest shallow lagoon-style setup — including the philosophy behind the design, custom-painted cabinetry, canister filtration, and why the overall presentation of an aquarium matters just as much as what’s inside the glass.

You can check out Courtney’s stunning Reef2Reef Tank of the Month feature here:
Reef of the Month – May 2025: CourtneyKeeps

And follow his work on Instagram here:
@courtneykeeps

Support the show: 👉 Follow us on Instagram: ⁠@reefing_radio⁠

📘 Find us on Facebook: ⁠Reefing Radio⁠

💬 Drop us an email at: ⁠reefingradio@gmail.com⁠

🎧 Subscribe to hear more reefing chat every week