Oh Dear I hope these are copepods....

BRS

ilikefish69

Well-Known Member
Review score
+0 /0 /-0
View Badges
Joined
Apr 29, 2022
Messages
781
Reaction score
571
Review score
+0 /0 /-0
Location
Indiana
Last night, just for fun, I shined(shone?) a flashlight at my tank when the lights were off and it was dark. What I saw disturbed me, very very deeply disturbed.

There were thousands of little tiny critters, almost looked like the rolly polly bugs. It was impossible to get a picture of them as they were almost see through when I went to take the picture, but they were EVERYWHERE. I mean truly, thousands of them.

I don't have a picture, and by the quality of the lens from this picture I understand why I couldn't get a picture, they were showing up invisible in all the pictures I took, but found something on google they resembled
1660328834112.png


I am not being silly when I say there were thousands. It looked like an infestation that has gotten out of hand like 7 years ago, but the tanks only been up since late Feb, early March.

I have always noticed very small copepods on the glass of my tank, and know they are good.

Can copepods reach lengths of 4-5 mm? Is "too many" copepods a bad thing? They were not eating corals, but they were climbing all over them. If they are bad, at this point I am going to take everything out of the tank, burn it with fire, and start over, because I am officially 'grossed out' after seeing this last night.

I will never, EVER, shine a flash light at my tank when the lights are off ever again. Be warned.
 
Nutramar Foods

Duncan62

Valuable Member
Review score
+0 /0 /-0
View Badges
Joined
Oct 4, 2021
Messages
1,458
Reaction score
1,275
Review score
+0 /0 /-0
Location
Kannapolis
Last night, just for fun, I shined(shone?) a flashlight at my tank when the lights were off and it was dark. What I saw disturbed me, very very deeply disturbed.

There were thousands of little tiny critters, almost looked like the rolly polly bugs. It was impossible to get a picture of them as they were almost see through when I went to take the picture, but they were EVERYWHERE. I mean truly, thousands of them.

I don't have a picture, and by the quality of the lens from this picture I understand why I couldn't get a picture, they were showing up invisible in all the pictures I took, but found something on google they resembled
1660328834112.png


I am not being silly when I say there were thousands. It looked like an infestation that has gotten out of hand like 7 years ago, but the tanks only been up since late Feb, early March.

I have always noticed very small copepods on the glass of my tank, and know they are good.

Can copepods reach lengths of 4-5 mm? Is "too many" copepods a bad thing? They were not eating corals, but they were climbing all over them. If they are bad, at this point I am going to take everything out of the tank, burn it with fire, and start over, because I am officially 'grossed out' after seeing this last night.

I will never, EVER, shine a flash light at my tank when the lights are off ever again. Be warned.
5mm in length? Amphipods. Good guys.
 
Top Shelf Aquatics

Tired

Valuable Member
Review score
+0 /0 /-0
View Badges
Joined
Aug 29, 2020
Messages
2,475
Reaction score
2,490
Review score
+0 /0 /-0
Location
Central Texas
Amphipods. Most fish will eat them, and should keep them reasonably controlled. If you really want to have as few as possible, try to find a Hassel's goby, they love devouring all your microfauna.

They're generally harmless, useful detritivores, and good fish food. If there are no fish to eat them and an excess of food, they can multiply to an unreasonable number and annoy your corals. They'll also eat sickly corals, sometimes.
 
Top Shelf Aquatics

Reefer Matt

Reef Cave Dweller
Review score
+0 /0 /-0
View Badges
Joined
May 15, 2021
Messages
928
Reaction score
3,298
Review score
+0 /0 /-0
Location
Michigan, USA
Last night, just for fun, I shined(shone?) a flashlight at my tank when the lights were off and it was dark. What I saw disturbed me, very very deeply disturbed.

There were thousands of little tiny critters, almost looked like the rolly polly bugs. It was impossible to get a picture of them as they were almost see through when I went to take the picture, but they were EVERYWHERE. I mean truly, thousands of them.

I don't have a picture, and by the quality of the lens from this picture I understand why I couldn't get a picture, they were showing up invisible in all the pictures I took, but found something on google they resembled
1660328834112.png


I am not being silly when I say there were thousands. It looked like an infestation that has gotten out of hand like 7 years ago, but the tanks only been up since late Feb, early March.

I have always noticed very small copepods on the glass of my tank, and know they are good.

Can copepods reach lengths of 4-5 mm? Is "too many" copepods a bad thing? They were not eating corals, but they were climbing all over them. If they are bad, at this point I am going to take everything out of the tank, burn it with fire, and start over, because I am officially 'grossed out' after seeing this last night.

I will never, EVER, shine a flash light at my tank when the lights are off ever again. Be warned.
:eek::eek::eek: Sounds like amphipods to me also. Food for the fish! I like it when the creepy crawlies come out at night, you get to see that it's more than an aquarium, it's an ecosystem! :grinning-face-with-smiling-eyes:
 
OP
ilikefish69

ilikefish69

Well-Known Member
Review score
+0 /0 /-0
View Badges
Joined
Apr 29, 2022
Messages
781
Reaction score
571
Review score
+0 /0 /-0
Location
Indiana
Amphipods. Most fish will eat them, and should keep them reasonably controlled. If you really want to have as few as possible, try to find a Hassel's goby, they love devouring all your microfauna.

They're generally harmless, useful detritivores, and good fish food. If there are no fish to eat them and an excess of food, they can multiply to an unreasonable number and annoy your corals. They'll also eat sickly corals, sometimes.
That was my main worry is that they become so apparent in the tank they just start walking all over my precious corals
 
OP
ilikefish69

ilikefish69

Well-Known Member
Review score
+0 /0 /-0
View Badges
Joined
Apr 29, 2022
Messages
781
Reaction score
571
Review score
+0 /0 /-0
Location
Indiana
Have you got fish? There are many fish that love them. Clowns, damsels, mandarin. Don't worry about them.
It's a 75 with 2 clowns and blue eye kole - don't think the kole cares for them, she's the saltwater version of a cow, eat and poop all day, haven't seen the clowns pick at them either.

I feed frozen mysis and the three fish gobble that up, maybe they're as scared of the critters as I was
 
World Wide Corals

melonheadorion

Well-Known Member
Review score
+0 /0 /-0
View Badges
Joined
Mar 8, 2021
Messages
695
Reaction score
454
Review score
+0 /0 /-0
Location
green bay
my small tank has a ton of them. its almost gross to shine a light in the tank at night, because they are everywhere. reminds me like a colony of ants scurrying about. i keep them there because they can be food for fish, but also feeders on stuff that doesnt get eaten by fish
 

Tired

Valuable Member
Review score
+0 /0 /-0
View Badges
Joined
Aug 29, 2020
Messages
2,475
Reaction score
2,490
Review score
+0 /0 /-0
Location
Central Texas
A small wrasse would murderize them in short order, but you shouldn't really have problems with them in a tank that has fish, as long as you aren't overfeeding the fish and leaving tons of food lying around for them to eat and multiply with.

There are loads of bugs we can encounter in our reef tanks, most of them of little to no concern to our reefs or to us.
 

Tamberav

7500 Club Member
Review score
+0 /0 /-0
View Badges
Joined
Jul 4, 2014
Messages
7,568
Reaction score
11,233
Review score
+0 /0 /-0
Location
Wauwatosa, WI
Is there any reason to tentatively start planning how to keep their numbers in check ?
Pods bloom in young tanks so not that unusual. The numbers tend stabilize as the tank ages.

They are fine and most fish eat them when given the chance. They come out in great numbers at night because fish are sleeping.
 
AS

smacbride

Active Member
Review score
+0 /0 /-0
View Badges
Joined
Aug 14, 2020
Messages
135
Reaction score
199
Review score
+0 /0 /-0
Location
Denver
I have a pair of Clowns and the bigger Clown will use his tail to stir up the substrate and get the pods swimming, and then both Clowns will eat the swimming pods. It's fun to watch, but the problem is that all my arragonite ends up in a big pile in a corner of the tank...
 
Top Shelf Aquatics

Duncan62

Valuable Member
Review score
+0 /0 /-0
View Badges
Joined
Oct 4, 2021
Messages
1,458
Reaction score
1,275
Review score
+0 /0 /-0
Location
Kannapolis
I have a pair of Clowns and the bigger Clown will use his tail to stir up the substrate and get the pods swimming, and then both Clowns will eat the swimming pods. It's fun to watch, but the problem is that all my arragonite ends up in a big pile in a corner of the tank...
My blue damsel stirs them up and they all feast..lol. It is fun.
 

Tavero

Community Member
Review score
+0 /0 /-0
View Badges
Joined
Aug 5, 2022
Messages
86
Reaction score
134
Review score
+0 /0 /-0
Location
Somewhere
These things will absolutely devastate new set up nano tanks. As soon as they reached a certain population density they started to eat my zoanthus, candy canes, tube worms and other fleshy corals. The only way i got rid of them was to shut off all pumps for one day to suffocate them.
Then I introduced shrimps and a lot of bristle worms as food competitors.
 
BRS

Is there such a thing as an "easy" acro?

  • YES (tell us about it in the thread)

    Votes: 87 45.1%
  • NO

    Votes: 43 22.3%
  • Not sure

    Votes: 61 31.6%
  • Other (please explain)

    Votes: 2 1.0%
Reef Labs ICP Water Test by Reef Labs Inc.
Top