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The Flagship Peninsula Reef

The Flagship Peninsula Reef

Dimensions
6 foot (72") peninsula
Tank type
SPS Dominant (Planned, Acropora Emphasis)
Deliberately cycles for algae and biofauna rather than bacteria, keeping Radions at 10% for weeks to exhaust nutrients before reefing out — reducing future algae battles.

A standalone 6-foot Waterbox Crystal Peninsula display cycled and running with fish only, intended as Reef Builders' single-brand flagship SPS reef. It is fully equipped (4 Radion Gen 4 Pros, twin MP60s, Vectra L1, Avast K1 calcium reactor) but has no corals yet, awaiting a heavy Acropora buildout of Worldwide Corals strains.

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Source: YouTube · Reef Builders
What sets this tank apart
Algae-first fishless cycle at 10% light
Deliberately cycles for algae and biofauna rather than bacteria, keeping Radions at 10% for weeks to exhaust nutrients before reefing out — reducing future algae battles.
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Reversible gyre with dual MP60s
Places both MP60s low at the back so each alone washes flow one direction, but together they drive a bottom-crossing upwelling gyre across the peninsula reef.
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Ceiling-hung conduit light rail
Built a custom EMT-conduit power strip bolted to a pole and hung from the ceiling to array four Radion Gen 4 Pros in a clean row over the peninsula.
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Tiered basket cable management
Uses stacked Home Depot dual baskets so each of seven-plus power supplies sits on its own level with room to breathe and cool, keeping nothing on the sump floor.
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Equipment Breakdown

Shop this build · 2 of 6 items priced
The Flagship Peninsula Reef — Full Equipment List
$1,837
est. build cost
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Filtration
Great White 10
Protein skimmer
Pulls so much air the stock silencer had to be modified just to keep it quiet — a skimmer problem most reefers would happily take.
Lighting
EcoTech Marine Radion XR30 Gen 4 Pro
EcoTech Marine
Radion XR30 Gen 4 Pro
Display lights ×4
🔧 DIY mod
Four Radions on a ceiling-hung EMT-conduit rail, held at 10% for weeks — starving algae during the fishless cycle before the Acropora buildout.
Modern equivalent: EcoTech Radion XR30 G6
$999.99 Buy → at Bulk Reef Supply Details →
Flow & Circulation
EcoTech Marine Vectra L1
EcoTech Marine
Vectra L1
Return pump
Part of the strictly single-brand EcoTech build — Radions, MP60s and Vectra all one ecosystem on this flagship display.
EcoTech Marine VorTech MP60
EcoTech Marine
VorTech MP60
Wavemakers ×2
⭐ Premium pick
Both mounted low at the back — each alone washes flow one way; together they drive a reversible bottom-crossing gyre across the peninsula.
$836.99 Buy → at Bulk Reef Supply Details →
Monitoring & Control
EcoTech Marine Controller
EcoTech Marine
Controller
Controller
Modern equivalent: Neptune Apex Controller →
Dosing
Avast Marine K1
Avast Marine
K1
Ca/Alk supplementation
Supplies all the evaporation top-off water during the cycle — every drop of replacement water arrives carrying Ca/Alk for the future Acro reef.

Husbandry & Notes

  • Cycling the tank for algae/biofauna, not bacteria, before adding any corals
  • Runs lights at only 10% while fishless-cycling to keep algae down
  • Peninsula layout viewable from both sides with low rockwork for top-down viewing
  • Two MP60s at back/bottom create reversible gyre flow across the tank
  • No sand, minimal rock, Oliver-Lynn style with high flow
  • Kalk/calcium reactor supplies all evaporation top-off water currently
  • Strictly single-brand system: Ecotech, Brightwell additives, Worldwide Corals strains
  • ~120 lbs natural live rock aquascaped low to grow corals tall
This is the flagship Peninsula reef tank
It's a single aquarium standalone display so we can take a little more time
I'll lighten up the bejesus out of this peninsula style reef tank
I'm cycling the tank not for bacteria but more for algae
This tank is gonna be exclusively for worldwide coral strains and I'm gonna have a very heavy emphasis on Acros