r/ReefTank • • 5d ago

No judgment questions zone - October 12, 2026

0 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 • • 6h ago

[Pic] I’ve successfully kept a mandarin for a year. I feel I have done well in my reefing experience now

Post image
127 Upvotes

r/ReefTank • • 3h ago

Feather duster worm emerging from tube

36 Upvotes

I got this feather duster worm about a month ago and only in the past few days it started emerging for extended periods of time.

I made a previous post about it not coming out and took some of the advice given there. I think what worked was having most of its tube surrounded by and in contact with rocks in addition to anchoring its base. And also feeding phytoplankton helps to encourage it to come out more.


r/ReefTank • • 5h ago

[Pic] IM100EXT - 1 year progress

Post image
22 Upvotes

r/ReefTank • • 7h ago

Gooseneck barnacles feeding

34 Upvotes

They seem to be doing well. They pull in food as it passes by. Haven’t noticed them reject anything or spit anything out. Even the small baby ones are seemingly doing good. Time will tell though.


r/ReefTank • • 6h ago

Critter ID, what is this?

19 Upvotes

Just noticed this, what is it?


r/ReefTank • • 5h ago

I got a Clown with a ghost face on it

Thumbnail
gallery
13 Upvotes

Is it rare or common? Paid 15$ for this ocellaris.


r/ReefTank • • 28m ago

Working in the industry is making me despise it

• Upvotes

It started out with interest. It turned into passion. And very quickly it has become something I’m starting to despise.

It’s fascinating and beautiful and interesting and mysterious in so many ways. It captures the attention of everyone. Once you dip your toes in and realize it’s not all that difficult, it’s hard to escape the lure.

The colors are dazzling. The variety is mesmerizing. The complexity is amazing and at times, incomprehensible.

As a consumer, we may not realize the depth of things. We see something in a store that we like and because it’s for sale in a store, obviously we should buy it. That’s consumerism.

I got enamored with saltwater for the same reasons everyone does. And I decided that was something I wanted to make a living doing. I started out doing independent aquarium maintenance. I quickly learned that rich people don’t give shit. They buy what they want and when it fails, they just buy more.

I then transitioned to a saltwater shop. It’s a well respected shop, the best in our state without a doubt. But the consumerism has hit me hard and I’m left feeling quite the moral dilemma.

Obviously the point of a business is to make money. But when you realize just how much profit is being made at the expense of the consumer and even worse, the living animals that we are selling, it gets hard to stomach.

I wish my employers would have kept their mouths shut. I wish they never told me the profit margins. Because now that I know, it’s absolutely sickening. You’re all getting ripped off.

People are pillaging the oceans so you can have something pretty to look at and buy again in a few months when it dies. Every single day, I have to sell people shit that I know is going to die. I have to sell things I know are going to be neglected. I have to sell things that nobody knows anything about because they’ve never been kept in captivity. I have to sell it all and “keep things simple” so the customer doesn’t ask too many questions and decide against it. All for a profit.

I got into this because it was fascinating and exotic and mysterious. Now that I’m aware of the in depths of the industry and the massive profits that are made, I’m absolutely sick about it and have been seriously reconsidering my career choice and the hobby as a whole.

I don’t think saltwater keeping is entirely unethical. I just hope that people will start educating themselves and make ethical, sustainable choices in this hobby. It’s truly disgusting when you really get down to it. I don’t want it to be that way and there’s ways we can improve.


r/ReefTank • • 12h ago

Nano tank especial

Thumbnail
gallery
24 Upvotes

20 gallon nano with a 6 gal side tank ... I let this thing go into the trash heap the last few years but now I've been back on top of it and it's crazy that all the corals survived the obsurd hair and bubble algae outbreak, and have grown back this much already .. some of the SPS were the size of a pinky nail under the hair algae


r/ReefTank • • 9h ago

Wait for it.

14 Upvotes

I didn't know they had so many.


r/ReefTank • • 25m ago

Crab stealing food from elegance coral

• Upvotes

I have been wondering why my elegance coral hasn't been able to keep all the fish I have been feeding it. Is this hairy crab?


r/ReefTank • • 3h ago

[Pic] What are these they’re popping up on all my soft coral, They have little hairs on them

Post image
3 Upvotes

r/ReefTank • • 14h ago

Any of y'all get tats of your creatures?

Thumbnail
gallery
26 Upvotes

This is my pistol shrimp Roland, my little gunslinger


r/ReefTank • • 6h ago

DFW expo pickups. Knicks and a dragon soul i believe. Knicks is almost branching into 4 heads. $130 for both.

Thumbnail
gallery
4 Upvotes

r/ReefTank • • 5h ago

[Pic] Why does my chromis look bonked

Post image
4 Upvotes

It looks like he got bonked on the head… why?? Ive had him for 2 months and he’s always looked like this lol


r/ReefTank • • 10h ago

Quick critters..

11 Upvotes

What in the world is snatching food from these little holes?


r/ReefTank • • 13h ago

[Pic] This hobby tests me

Post image
16 Upvotes

Lost 80% of my chalice overnight. I know it's worth it, but damn... Just when my hammers were getting as big as the one I lost to brown jelly, this happens.

Quarantine bucket, peroxide treatment, scrubbed off the jelly. Not easy to frag the encrusted part so I let it be. An old frag from this same colony is growing on a rock in the corner of the tank, healthy and untouched.


r/ReefTank • • 5h ago

Sponge?

Thumbnail
gallery
3 Upvotes

I think I have some sponges bothering my coral. Should I remove them ?


r/ReefTank • • 3h ago

What are these on my tank wall?

Thumbnail
gallery
2 Upvotes

r/ReefTank • • 9h ago

Advice on how to make tank look better?

6 Upvotes

I apologize for the bad video work, tried to capture best I could.
First ever salt water tank, 15 g. have some new corals and stuff but doesn’t feel complete or right imo
Anything I should add, change, or keep? Any Help appreciated


r/ReefTank • • 9h ago

My first saltwater setup, been a learning curve but going well

4 Upvotes

Around 7-8 months old at this point I'd say, first corals went in less than a month ago. Slowly and patiently seeing how they do and then getting more if the answer is well!


r/ReefTank • • 1d ago

[Pic] Nem Cube

Post image
167 Upvotes

r/ReefTank • • 7h ago

help: got this poletti mushroom for 15 bucks

Thumbnail
gallery
3 Upvotes

it was attached to a frag and now it just detached itself from the frag.

i’m dropped it in the low flow low light area of my tank. is this good? or should i move it?


r/ReefTank • • 14h ago

Bought a bubble coral in bad shape today and this one came with it

10 Upvotes

Anyone know what it is?


r/ReefTank • • 14h ago

[Pic] Is this cyano?

Post image
8 Upvotes

I’ve treated with chemi-clean on two separate occasions to no avail. An extended seemed to eradicate it but a few days after the lights came back on it was back and spreading rapidly. Any advice?