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© 2026 West Coast Reefers

🎉 BIG NEWS: West Coast Reefers is officially a 501(c)(3) nonprofit! The IRS approved us, effective back to our founding on Aug 24, 2026, so donations to the club are now tax-deductible. Thank you to every reefer who helped build this. Donations open soon.

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We're officially a 501(c)(3) nonprofit!

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Happening now

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Nov 8
📅 Sun, Nov 8
OC Frag Swap Winter Edition
11:00 AM · 1850 N. Placentia Ave · FREE
🐠 Marketplace
3 new this week
Tap to browse →
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Recent Threads

🐡 Build
@janiners305
120@BackbayReefYesterday at 7:30 PM»

Planet Tideline 105

Checking in @janiners305 - tank good ?

Coral
@o2manyfish
49@BackbayReefYesterday at 4:15 PM»

Free Frags in Encino

Believed Dave’s system is one big system so heating / cooling inside the main tank?

🐡 Build
@BackbayReef
93@BackbayReefYesterday at 1:59 PM»

550gal Angel Lover

Now the water params are stable, it’s time for me to clean up and redo the frag tank. I’m going to upgrade the DIY black egg crates and remo

Water Chemistry
@IvanW
14@BackbayReefTuesday at 10:30 PM»

What is your pH and how to keep it above 8

I’m running an Avast K2 kalk stirrer and soda ash + TM A/K for now (Calcium is a little too high). Will switch from soda ash to AFR next mon

Lounge
@Five_5_six
111@Five_5_sixTuesday at 12:00 PM»

I like projects

Ready for acraglas

General
@BackbayReef
11@ktranMonday at 7:57 PM»

It’s HOT - how are you cooling your tank(s)?

It’s scorching hot even though we paid our SoCal weather tax! Is the refund in the mail? It’s 92F outside and all my tanks are at 80F. The k

General
@Drexl
10@Pandoras_BoxMonday at 5:24 PM»

Valonia zero, pithos one!

Supposedly, pithos crabs have an average tank lifespan of 1-3 years with stable water parameters and sufficient algae or supplemental feedin

Introductions
@Five_5_six
6@ThatPoolGuyMonday at 2:10 PM»

Old school.

I ♥️ Halides

Water Chemistry
@ktran
4@ktranMonday at 12:11 PM»

Red bug killer

Take out the snails 🤣

Introductions
@sploosh
4@splooshSunday at 8:22 PM»

Heya

Just two rainbow BTAs and a new green carpet nem; the clowns absolutely love the btas and I was kinda worried they'd love it to death when i

Page 1 of 16Next →
🐠

Fresh on the Marketplace

all →
  • FS: Eheimna canister filters
    $100· Drygoods
  • 🔎
    WTB: Mangrove Tree
    WTB$150· Livestock
  • Ice Cap Pro 50 algae turf scrubber
    $125· Drygoods
  • Diaseris frags
    $65· Livestock· Glendora
  • For Sale: large and medium coral
    $70· Livestock· Lakewood 90715
🔥

Trending this week

  • 1
    I like projects
    ▲ 1 · 💬 11 · 3d ago
  • 2
    Valonia zero, pithos one!
    ▲ 0 · 💬 10 · 6d ago
  • 3
    WTB: Established CBB
    ▲ 0 · 💬 9 · 5d ago
  • 4
    Old school.
    ▲ 0 · 💬 6 · 3d ago
  • 5
    Red bug killer
    ▲ 0 · 💬 4 · 3d ago
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Community Forums

AllIntroductionsCoralFish
👋
Introductions
Say hi - everyone posts here first.
56
Threads
🌺
Coral
SPS, LPS, softies - frags & full colonies.
5
Threads
🐠
Fish
Stocking, behavior, compatibility.
6
Threads
🏵️
Anemones & Clownfish
Nems and their clowns - hosting, care, pairings, and splits.
2
Threads
⚙️
Equipment
Skimmers, pumps, lighting, controllers.
11
Threads
🧪
Water Chemistry
Alk, Ca, Mg, nitrate, phosphate, dosing.
9
Threads
🦀
General
Inverts, clams, macroalgae - anything reef that doesn't fit above.
15
Threads
🔧
DIY
Builds, mods, and homebrew gear.
5
Threads
📷
Photography
Reef tank photography - gear, settings, editing, and your best shots.
2
Threads
🌱
Beginner Help
Start here. No question is too basic.
4
Threads
🏪
Local Fish Stores
LFS news, sales, livestock arrivals, store events. Free for stores.
2
Threads
🤝
Sponsors
Deals, new products, and news from verified vendors and local stores.
0
Threads
⭐
Vendor Reviews
Your own experiences with online vendors and stores - shipping, packing, DOA policy, follow-through.
2
Threads
🛋️
Lounge
Off-topic chat. Anything that's not strictly about the tank.
10
Threads
💡
Site Feedback
Suggestions, bug reports, ideas for the site itself.
8
Threads
📅

Upcoming events

all →
  • Nov8
    OC Frag Swap Winter Edition
    Placentia, CA · FREE
🐠

Fresh on the Marketplace

all →
  • FS: Eheimna canister filters
    $100· Drygoods
  • 🔎
    WTB: Mangrove Tree
    WTB$150· Livestock
  • Ice Cap Pro 50 algae turf scrubber
    $125· Drygoods
  • Diaseris frags
    $65· Livestock· Glendora
  • For Sale: large and medium coral
    $70· Livestock· Lakewood 90715
🔨

Auctions ending soon

all →
No live auctions. Start one.
🔥

Trending this week

  • 1
    I like projects
    ▲ 1 · 💬 11 · 3d ago
  • 2
    Valonia zero, pithos one!
    ▲ 0 · 💬 10 · 6d ago
  • 3
    WTB: Established CBB
    ▲ 0 · 💬 9 · 5d ago
  • 4
    Old school.
    ▲ 0 · 💬 6 · 3d ago
  • 5
    Red bug killer
    ▲ 0 · 💬 4 · 3d ago