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The Bulletproof 150-Gallon Reef

The Bulletproof 150-Gallon Reef

Volume
150 gal
Tank type
Mixed Reef
Keeps Cipro/antibiotics readily available and doses at the first sign of cloudy water or a low-pH alarm to halt bacterial crashes. Credits this with saving the tank through six major crashes.

A secondhand 150-gallon mixed reef bought fully loaded off Facebook Marketplace on Father's Day 2023, run with reused 8-10 year old rock and sand bed. Despite six major crashes and chronically extreme nitrates (~160 ppm), the resilient, coral-packed system shows rapid acro growth and actively breeding clownfish and Banggai cardinals. It's being phased out in favor of a new Red Sea Reefer 850S with better equipment access.

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Source: YouTube · Top Shelf Aquatics
What sets this tank apart
Antibiotics on standby for crashes
Keeps Cipro/antibiotics readily available and doses at the first sign of cloudy water or a low-pH alarm to halt bacterial crashes. Credits this with saving the tank through six major crashes.
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Full Apex automation as safety net
Relies on Apex pH/salinity alarms and remote control to catch crashes remotely, adjusting alk dosing as demand swings from 30ml to 12ml/day. Views automation as essential insurance, not luxury.
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Elevate flood-prone electronics
Puts any floodable electronic (dose heads, etc.) on a stand above the flood line after frying an Apex dose head, so a leak can't reach wiring or equipment.
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Let the tank run dirty
Deliberately stopped chasing numbers and lets nitrates run over 150 ppm, proving corals adapt and color well when parameters are stable rather than ideal.
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Equipment Breakdown

Shop this build · 3 of 5 items priced
The Bulletproof 150-Gallon Reef — Full Equipment List
$1,920
est. build cost
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Lighting
EcoTech Marine Radion XR30
EcoTech Marine
Radion XR30
Display lights ×3
Adding two extra units triggered the rapid acro growth — light, not chemistry, was the limiter on this nitrate-160 tank.
$999.99 Buy → at Bulk Reef Supply Details →
Orphek OR Bar
Orphek
OR Bar
Supplemental light ×2
Blue fill between the Radions — one recently went out.
Flow & Circulation
Maxspect Gyre
Maxspect
Gyre
Cross-flow ×2
$519.74 Buy → ⚠ Out at Bulk Reef Supply Details →
Monitoring & Control
Neptune Systems Apex
Neptune Systems
Apex
Controller
🏋️ Workhorse
pH and salinity alarms plus remote control caught crashes early through six of them — automation as insurance, not luxury.
$399.95 Buy → ⚠ Out at Bulk Reef Supply Details →

Husbandry & Notes

  • No water changes; relies on Triton-style Moonshiners dosing and trace elements dosed daily
  • Sends ICP test every ~6 weeks and makes Moonshiners corrections
  • Dose alkalinity, magnesium, calcium via calcium reactor plus Apex dose heads
  • Target alk ~8.4-8.5 dKH after finding high 12 alk made corals unhappy
  • Keeps magnesium high (~1500) for goniopora; calcium ~450, salinity ~35 ppt
  • Keeps antibiotics (Cipro/Kanaplex) on hand to treat crashes immediately
  • Runs GFO and dosed NoPox to fight chronically high nitrate/phosphate
  • Listens to the tank; culls corals (gonies, torches) that don't thrive rather than chasing them
Reported parameters
Salinity
35 ppt
Alk (dKH)
8.5
Calcium
450
Magnesium
1500
Nitrate
over 70, currently ~160 ppm (off the chart)
Phosphate
historically 2-3, as high as 0.8
pH
daily bump to ~8.3-8.4
It's gone through six major crashes.
I think this tank definitely proves that corals can adapt.
For over a year now, they've been over 70. Today the nitrates are 160.
You have to listen to your tank. Your tank talks to you. It's a language, man.
If you're investing this much time and energy and money into coral, you need the safety nets.