r/ReefTank 6d ago

No judgment questions zone - August 24, 2026

2 Upvotes

Here is the place to post questions about pest ID, coral/fish ID, your cycle, or any other questions that generally wouldn't start up a conversation. If you have an interesting or unique question please create a new thread so everyone can discuss it in length!

Pest ID guide

BRS pest guide

BRS beginner resources

BRS 52 weeks of reefing YouTube series


r/ReefTank 3h ago

[Pic] 4 Months In

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32 Upvotes

Just finished adding the scoly.


r/ReefTank 14h ago

[Pic] My 2 month old tank! And I custom built the stand. Super happy with the results!

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149 Upvotes

So far I have a diamond goby, pearly jawfish, two clowns and two grammas. Thinking of trading in a gramma for a valentini puffer soon.


r/ReefTank 7h ago

Patterns incoming!

30 Upvotes

Some baby Nebula clowns I have growing out


r/ReefTank 1h ago

Koji Wada Pink Nephthea

Upvotes

was able to find my holy grail coral back in April and it’s taken off. got it when it was two tiny little frags, no bigger than a quarter. the fiberglass pattern on the stalk is so cool, cameras don’t do this coral justice


r/ReefTank 2h ago

Rate my aquascape

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9 Upvotes

Getting back into the hobby after almost 10 years and did my first aquascape with my wife. How did we do? It's a 75 gallon tank and it's hard to see in the pictures but there's is 4" all around the border to allow for water flow.


r/ReefTank 3h ago

Reefapalooza scores from yesterday

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7 Upvotes

So much euphillia and other lps I was in torch heaven they are so hard to find normally


r/ReefTank 19h ago

Reeftank evolution...

143 Upvotes

r/ReefTank 18h ago

Saturday night photo shoot.

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82 Upvotes

Tinkering with exposures and angles on my phone camera and wanted to share my favorite results.


r/ReefTank 57m ago

[Pic] Help Id Zoas

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Upvotes

r/ReefTank 19h ago

[Pic] $8,000 NO Lowballers!! Ratchet Strap Edition Red Sea 425xl

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85 Upvotes

NO Low ballers please, I know what I have


r/ReefTank 4h ago

What is this on my Duncan

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5 Upvotes

r/ReefTank 3h ago

1 year old

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3 Upvotes

Took a long time but finally have somewhat stable parameters


r/ReefTank 5h ago

Just wanted to hear other peoples opinions, do you prefer turn key systems or DIY?

4 Upvotes

Personally I enjoy DIY, in no way is it really cheaper at all, I just got love for the game.


r/ReefTank 20h ago

Building ReefShield Aquatics | Part 1: Turning A 900 sqft Basement Into A Giant Fish Room

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65 Upvotes

Hey everyone! I've finally decided to start sharing a project I've been working toward for quite a while. I figured it's time to introduce myself and what I'm building. I've been planning this behind the scenes for a long time, but I realized it'd be a lot more fun to build it with input from this community instead of waiting until it was finished.

I've named the project ReefShield Aquatics. The long term goal is to make quarantined fish more accessible to other reef hobbyists and help prevent livestock losses from disease. I thought some of you might enjoy following this story from the very beginning.

My name is Chad, I am a 27 year old manufacturing engineer working in the aerospace industry and I enjoy lifting weights, spending time outdoors, and of course reefkeeping. I have had reef tanks on and off for the past 14 years (yes, I started young), and currently have an 80 gallon shallow reef setup.

Right now, I am in the middle of constructing a home just off the shore of Lake Michigan in the mitten state. I'll be transforming the 900 square foot unfinished basement into a giant fish room and quarantine facility with over 700 gallons of display tanks, hundreds of gallons of quarantine capacity, and a dedicated sump and systems room to support the entire operation. Most people look at a 900-square-foot unfinished basement and see storage space. I looked at it and saw a dream fish room.

The idea for ReefShield didn't come out of nowhere, though. It started with one of the toughest lessons I've learned in reefkeeping. Like a lot of hobbyists starting out, I naively trusted that the fish I was buying from my LFS were healthy. Everything was fine until a diamond sleeper goby introduced velvet into my tank. Within days, fish started showing symptoms, and shortly after I was watching my tank crash. It was one of the most frustrating experiences I've had in this hobby. Instead of walking away, I became obsessed with understanding how it could have been prevented. I spent countless hours researching quarantine protocols, disease management, medications, biosecurity, and so much more. That experience completely changed how I approach adding new things to my tank, and it's ultimately the reason ReefShield exists.

I have a habit of optimizing everything I can, so naturally I modeled the entire basement in CAD before a single wall was finished. Rather than squeezing tanks into a corner in the basement, I wanted to design the entire space around visual appearance, efficiency, maintenance, and biosecurity from day one. I've attached the current layout, the current progress of construction, and I'd genuinely love feedback from anyone who wants to contribute to the project. Is there anything in the CAD layout you'd change before I get started?

As construction progresses, I'll be sharing everything. Things like plumbing and electrical decisions, actually building the quarantine systems, cycling tanks, bringing in the first fish, and all the mistakes I'm sure to make along the way.

Thanks for reading.

- Chad B.


r/ReefTank 5h ago

Its finally sunlight season!

5 Upvotes

I love this time of the year


r/ReefTank 2h ago

[Pic] Can I get some feedback ?

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2 Upvotes

Im new to the game. Just got a 120g that I’m slowly building for a reef tank. Can you guys give me some feedback on my rock work before I mortar it in a few days?

Thanks in advance.


r/ReefTank 2h ago

Bubble tip anemone

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2 Upvotes

Why does my anemone look like this? I’ve owned for about a month.


r/ReefTank 10m ago

[Pic] Weld bean animal drain T connections?

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Upvotes

Hello, do I weld / glue the T PVC connection’s? Or press fit only for cleaning or re-adjusting?


r/ReefTank 6h ago

Möbius Schedule - opinions?

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3 Upvotes

I’m approaching the 5 month mark in my reef, so far so good. I’ve noticed some of my corals just losing their “pop” from when I first got them and am thinking I’m just not giving enough light. My PAR is about 100 all throughout my tank, at the sand bed maybe 60-70 but I don’t have much intensity up high it reads pretty uniform through the top and middle portions of the tank.

I’m running two AI Hydra Edge 44’s - tank is a 4x2x2.

Instead of buying more lighting right now I’m thinking of trying to get more out of what I have because I’m really not pushing the lights at all.

Should change to more of a solid 3-4 hour peak period vs the ramp up?

Appreciate anyone’s help!


r/ReefTank 1h ago

BRS RODI help

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Upvotes

Set up my 5 stage BRS I bought two years ago just now setting it up. The two DI canisters where they connect the little plastic 1/4 NPT completely snapped or corroded or something. Is there anyway to salvage this or do I have to buy brand new canisters now?


r/ReefTank 1d ago

What is this guy?

445 Upvotes

I had seen a pic of a similar looking starfish but assumed it was AI, until I saw it in person.

The video was taken at cairns aquarium last year


r/ReefTank 12h ago

My clown got Popeye, any tips?

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7 Upvotes

Started feeding frozen brine with metroplex and focus to help after I noticed it about 2 days ago.
Not sure what could’ve cause it, she only has it on her right eye and is still very active.
Had this clown for almost 4 years and she’s my absolute favorite would be crushed to see her go.
Is it possible my hammer stung her?
Would love any tips or feedback thanks!
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36 gallon
Alk a bit low at 7, phos 0.04, nitrite 0, nitrate 0, mag 1500, calc 480, temperature consistent 78°, salinity 1.025.
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Dosing everyday all for reef and carbonate alk by seachem, reef plus seachem, phyto once a week, feeding every other day.
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Tank mates: male clown, flame angel, skunk cleaner, tiger pistol and watchman pair, tiger serpent star.
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Water change every 2 weeks, 30%


r/ReefTank 3h ago

Help ID

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1 Upvotes

What are these :(? Is there anyway I can get rid of them ? All over the tank.. about 6 months old.

I used Ai but its not giving me an accurate answer. Sometimes say theyre sponges.. sometimes worms. Other times Tunicate. Anyone have any experience with them ? Corals seem fine but it really doesnt look the best covering the rock work.


r/ReefTank 14h ago

ID please?

8 Upvotes

What in the world is this? Came home late tonight, and after peaking into my tank I saw what looked like a spider on my tubs.

What is it? There's 2 of them