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Is My Torch Coral Pooping?

As the popularity of keeping reef aquariums and other types of saltwater aquariums continues to increase, we have noticed more and more people reaching out with questions about coral.

Although torch coral has always been a popular option, the newer, unique and rare colored torch coral really has resulted in a spike in the number of people adding torch coral to their aquariums for the first time.

One of the more unique things that we see people asking about time and time again is torch coral pooping as it can be such a strange experience for anyone new to keeping corals.

Due to so many people asking various questions about their torch coral pooping each month, we have decided to publish our own article to try and help as many of our readers as possible who are looking to add torch coral to their aquariums.

As we will cover throughout the article, there are actually a number of different things that your torch coral can excrete with some of them being poop and others being other types of waste.

The majority of the time, this is nothing to worry about as torch coral pooping and expelling other waste products is totally normal.

We have noticed countless people reaching out worried about there being an issue with their torch coral when it poops but this is not the case at all so try not to worry.

Do Torch Corals Poop?

Torch corals do “poop” as do all living things as excretion and the expulsion of waste products is essential to live.

Torch corals will expel various types of waste through the various digestion stages with some being the coral version of poop, some being vomit, and some just being the release of zooxanthellae.

What you feed your torch coral also has a direct result on how often it will poop as well as what it will look like.

In our opinion, the best food for a torch coral is Mysis Shrimp as the majority of torch coral seem to eat the mysis shrimp without issue and not throw them out or vomit them back up resulting in quick and easy nutrients as well as a normal, easy to clean poop.

Most torch coral will also happily eat brine shrimp too.

Although brine shrimp and mysis shrimp are both usually great food options for torch coral, their poop can be a little more “stringy” if they eat brine shrimp making it more difficult to clean up.

This is one of the main reasons that most people who keep coral will choose to feed them Mysis Shrimp over the other popular food options.

“Torch coral – Euphyllia glabrescens” by Lucas Thompson is licensed with CC BY-NC-SA 2.0. To view a copy of this license, visit

How Often Does Torch Coral Poop?

The frequency of a torch coral pooping will depend on its size, the water conditions, and most importantly, the volume of food it eats but pooping once every two days is usually considered normal.

Some torch coral will poop daily though if you do feed them often even if you aren’t overfeeding them.

That said, some torch coral will poop considerably less than this due to the majority of the nutrients being used for growth or repair and only small amounts of waste being released.

Due to torch coral not having a liver to produce bile or any dead blood cells that they have to excrete, their poop can be almost transparent at times making it difficult to know that your coral even pooped.

If you use a gravel vacuum as a part of your regular tank maintenance, you may actually be cleaning up a surprising amount of torch coral poop that you can’t even see, especially if you are using it on the sandbed in the tank.

Keep in mind though, there are arguments both for and against using a gravel vacuum in a reef tank so this is not considered an essential accessory.

Is Coral Slime Torch Coral Poop?

Your torch coral will naturally release “coral slime” at times due to a build up of mucus or zooxanthellae requiring the release.

Although this is different from torch coral poop, many people who keep coral will still refer to coral slime as coral poop even though they are actually different.

It doesn’t help that at times, a torch coral can release coral slime and coral poop at the same time making it hard to identify what’s actually happening.

In a fully optimised tank with perfect conditions and a high-quality torch coral food this can actually happen on a surprisingly frequent basis too.

We sometimes see people worry about their torch coral slime being different colors than usual but this can be normal too.

There are multiple reasons why corals release slime and some reasons release a brown slime while others release a more green colored slime. If there is coral poop mixed in with the slime then this can sometimes make it look a shade of red too.


That brings our article going over your torch coral pooping to an end. We hope that we have been able to help our readers better understand why torch corals poop and that there is usually nothing to worry about so try to put your mind at ease. A surprisingly high number of beginners to keeping coral also don’t realise that corals actually poop too so we often see a large amount of confusion about what’s actually happening so hopefully, we have been able to clear that up too.