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r/ReefTank

124,716 subscribers
A friendly place to discuss and show off all things saltwater aquarium related!

Notice: This subreddit is not actively monitored, so the posts here are only a small subset of what exists on reddit.

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to r/ReefTank by Massage_seattle
3 weeks ago
Preview thumbnail for Too much or too little light? image
Too much or too little light?
to r/ReefTank by dkorner
1 month ago
Preview thumbnail for Algae in new tank. image
Algae in new tank.
to r/ReefTank by No_Distribution4599
4 weeks ago
Preview thumbnail for Sand sifting starfish on glass? image
Sand sifting starfish on glass?
[Pic]
to r/ReefTank by dkorner
1 month ago
Best clown fish for hosting anemone.
to r/ReefTank by dkorner
1 month ago
Preview thumbnail for Maroon clown fish image
Maroon clown fish
to r/ReefTank by No_Distribution4599
1 month ago
Preview thumbnail for Anyone know if this is good at lowering phosphate and nitrate. image
Anyone know if this is good at lowering phosphate and nitrate.
[Pic]
to r/ReefTank by No_Distribution4599
1 month ago
Does AB+ increase nitrate or phosphate?
to r/ReefTank by No_Distribution4599
1 month ago
How can I lower my phosphates?
to r/ReefTank by No_Distribution4599
1 month ago
Preview thumbnail for How do I lower my nitrates? image
How do I lower my nitrates?
to r/ReefTank by No_Distribution4599
1 month ago
Preview thumbnail for Anyone know what this red algae is and how to get rid of it? image
Anyone know what this red algae is and how to get rid of it?
to r/ReefTank by No_Distribution4599
1 month ago
Preview thumbnail for Coral dying to algae? How do I remove the algae? image
Coral dying to algae? How do I remove the algae?
to r/ReefTank by No_Distribution4599
1 month ago
Preview thumbnail for What do I use to cut this gsp? image
What do I use to cut this gsp?
to r/ReefTank by No_Distribution4599
1 month ago
Why won’t clownfish go into anemone after he jumped out of the tank?
to r/ReefTank by ImmediatePeace24
1 month ago
Question About Auto Top Off
to r/ReefTank by Maskedsage
2 months ago
Preview thumbnail for Name suggestions for my derpy urchin? image
Name suggestions for my derpy urchin?
[Pic]
to r/ReefTank by No_Distribution4599
1 month ago
Preview thumbnail for Anyone know why my clownfish is acting so aggressive? image
Anyone know why my clownfish is acting so aggressive?
to r/ReefTank by No_Distribution4599
1 month ago
Can clowns damage an anemone from diving into it too hard?
to r/ReefTank by Bomurphy2014
3 months ago
FOWLR tank setup what are some fish that are relatively inexpensive to put in it?
to r/ReefTank by Particular_Ad_9249
3 months ago
Preview thumbnail for 100 gallon mixed reef image
100 gallon mixed reef
to r/ReefTank by Bomurphy2014
3 months ago
First time building a reef tank… help with some questions?
to r/ReefTank by Bomurphy2014
3 months ago
27F building a reef tank…help please??
to r/ReefTank by DeadAnenome
2 months ago
Preview thumbnail for My favorite Zoa, the Tuxedo Zoa image
My favorite Zoa, the Tuxedo Zoa
[Pic]
to r/ReefTank by wisteria72
1 month ago
Mixing saltwater for the first time
to r/ReefTank by Unique-Discussion326
1 month ago
Preview thumbnail for Torch Alley, after a 3 year absence, is back strong in my 125g. image
Torch Alley, after a 3 year absence, is back strong in my 125g.
to r/ReefTank by TrainingCouple2330
3 months ago
Reef tank Dino out break v2