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The NYC 75-Gallon Reef

The NYC 75-Gallon Reef

Volume
75 gal
Dimensions
47" long x 20" high x 21" wide
Tank type
Mixed Reef
Uses fluorescent AB+ (and powdered food) to visualize flow direction over several days, then places stinging corals (gonies vs Bernardpora) so their tentacles sweep opposite ways and coexist.

A heavily loaded Red Sea Reefer 350 mixed reef on the 30th floor of a NYC apartment, run on a budget with a homemade daily food blend and kalkwasser as the backbone. The reefer credits elevated pH, stable alkalinity, and careful flow mapping (via AB+ dye) for explosive SPS and LPS growth, with SPS like digitata literally growing out of the water.

View original source
Source: YouTube · Top Shelf Aquatics
What sets this tank apart
AB+ dye to map flow
Uses fluorescent AB+ (and powdered food) to visualize flow direction over several days, then places stinging corals (gonies vs Bernardpora) so their tentacles sweep opposite ways and coexist.
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Bouncing torches to save flesh
Deliberately positions torches under the gyre in a gentle bouncing motion instead of one-direction slamming, which he believes tears torch flesh at the sharp mouth edges and kills them.
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Elevated-pH high-par growth
Pushes 'low-light' SPS (digi, cyphastrea) to 800-1000 par, crediting elevated pH for the immunity and strength that let corals tolerate such high light without stress.
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Fan-driven kalk evaporation
Skips evap covers and keeps temp low so cooling fans run most of the day, driving the evaporation that pulls in kalkwasser and helps hold pH high in a hot high-rise apartment.
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Equipment Breakdown

Shop this build · 2 of 10 items priced
The NYC 75-Gallon Reef — Full Equipment List
$930
est. build cost
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Filtration
IceCap Curve Elite 5
IceCap
Curve Elite 5
Protein skimmer
Air intake runs through a recirculating CO2 scrubber — part of the pH-above-all approach targeting 8.6-8.7.
Lighting
EcoTech Marine Radion XR15
EcoTech Marine
Radion XR15
Display lights ×2
One over each end of the tank, bracketing the budget center bar — premium edges, cheap middle.
$529.99 Buy → at Bulk Reef Supply Details →
AASE Quanta Helix Bar
AASE
Quanta Helix Bar
Display light
💡 Budget hack
A ~$100 Radion-lookalike covering the center of the tank — he credits it with plenty of growth.
Pixel Light
Pixel
Light
Accent light
Sits back-right on a custom mount to brighten a dark low-light corner of the scape.
Flow & Circulation
Amazon (generic/budget)
Return pump
Return pump
💡 Budget hack
A no-name Amazon pump — on a budget build the return is the easiest place to save.
Modern equivalent: Jebao DCT-6000 Return Pump →
Jebao DMP 40
Jebao
DMP 40
Wavemaker
Aimed using AB+ dye flow-mapping — the fluorescent plume gets tracked for days before a pump angle is locked in.
Hygger Gyre
Hygger
Gyre
Wavemaker
Torches sit beneath it on purpose, bouncing gently — one-direction slamming is what he believes tears torch flesh at the mouth edge.
VCA Random flow generator nozzles
VCA
Random flow generator nozzles
Flow nozzles
Screw onto the return outlets to randomize laminar flow — dead-spot insurance with zero extra pumps.
Monitoring & Control
Neptune Systems Apex Pro
Neptune Systems
Apex Pro
Controller
Runs an Energy Bar, Trident auto-tester and an Avid Aquatics monitor screen — a full automation stack squeezed into a 30th-floor apartment.
$399.95 Buy → ⚠ Out at Bulk Reef Supply Details →
Dosing
Captivate
MT trace program
Ca/Alk supplementation
Kalkwasser is the backbone — dosed by a Neptune Versa, with MT traces (manganese, fluoride, iodide) and aminos layered on per ICP results.

Husbandry & Notes

  • Kalkwasser is the driving force for stability; keeps alkalinity stable and pH elevated for SPS growth.
  • Chases pH above all — aims for 8.6-8.7 for coral strength and infection immunity.
  • Feeds daily with a homemade all-in-one blended food batch to mimic natural reef feeding.
  • Turns off return pump during feeding so food settles to floor corals and Nassarius snails.
  • Doses PNS Probio 3x/week to combat vibrio and prevent brown jelly spread.
  • Doses trace elements (manganese, fluoride, iodide) based on ICP tests, anticipating depletion.
  • Runs a lid to stop expensive wrasses (leopard, cleaner) from jumping out.
  • Keeps temperature low intentionally to force cooling fans on for evaporation-driven kalk dosing.
Reported parameters
pH
8.6-8.7 target (elevated)
Clowns flapping on the snow salt. It was horrible. Luckily, they survived.
I started kalkwasser. And I can't stop them from growing.
If you're going to chase anything, chase the pH. The higher the better.
Instead of it turning into brown jelly, it turned into a white stiff cottony substance... it didn't spread. And that sold me.
If I can have this closet, you can take every other closet in the house. We shook on it.