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Feeder Tank

Joined
Oct 13, 2005
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511
When I got Blinky, I was surprised to open the box and see 3 bags. One contained large fiddler like crabs, one contained about 50 or so snails, and one contained Blinky. I originally put all of the snails, crabs, and Blinky together in the main tank. However, the crabs are starting to worry me. They have already killed all of the hermits I had for Blinky, and they seem aggressive. Blinky's mantle is about 1", and the crabs range in size from 1" -2" total length. I was wondering if I could keep all (about 10) of the crabs in a small sterilite container? It is flatter than it is tall, and probably holds about 1 gallon of water. Would I need any filtration? They seem to need air, because they are constantly cimbing the seals at the corners of the tank. They are dark blue, with reddish orange markings/claws. I know a lot of people don't have filtration on their feeder tanks when there aren't that many prey items in them. I'm gonna put a new filter pad in there for them to climb onto if they do indeed need air. Will blinky eat the small, round black snails? They are about 1/2". Thanks!
 

DHyslop

Architeuthis
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Dec 22, 2004
Messages
1,713
Ivar hasn't eaten any of his snails yet, I think its just personal preference on the part of the octo.

Take a look at my feeder tank on my Tank renovation thread. I have a 6-gallon plastic bin from Home Depot. It has a wet side and a sandy side. I cut a hole in it for a 3/4" bulkhead and strainer: water is supplied via an airhose line from my main tank and drains into my filter.

You don't need the complexity of running water, but you'll have to do regular water changes in it.

One thing to keep in mind is the crabs are real escape artists. I had three climb up the air line and jump to the ground. I ended up elevating the end of the line high enough that they can't grab onto it from the bottom.

Good luck

Dan
 
Joined
Oct 13, 2005
Messages
511
Well, i'm no plumber, lol. I'm horrified by sumps. Well, MAKING a sump, or anything else with water moving out of the tank.

The little bin thing I have them in has a lid that came with is. I guess I could drill some small holes in it. I even considered floating it in the main tank, but Blinky would probably find her way in, lol. Or help the crabs find a way out. Out of the frying pan and into the fire. Out of the feeder tub, and into the octo den.

So, basically, if I just do WC's, i'll be ok with no filter?
 
Joined
Sep 8, 2006
Messages
2,390
When I ordered Fiddlers I put them all in a tiny critter keeper, about 5" by 3". I kept about a half inch of water in it with a rock and changed it daily. It makes it easier to make sure the food gets fed. None of them killed each other and they all lived, until Einy ate them. Time for another order.

I did see Einy have a few conflicts trying to conquer the larger crabs, especially the males with the very large claws. Scared me a few times, but he figured out strategies to avoid getting pinched. It wouldn't be a bad idea to seperate them and only keep one in there with your octo at a time. I would think any clean plastic container will do the trick.
 
Joined
Oct 13, 2005
Messages
511
Sweet. Some of these crabs are big! Blinky is only about 2" in resting position, and some of the crabs are that large. I don't think she can handle them. They don't have big claws, but still...
 
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Sep 8, 2006
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Brock Fluharty;83976 said:
Sweet. Some of these crabs are big! Blinky is only about 2" in resting position, and some of the crabs are that large. I don't think she can handle them. They don't have big claws, but still...

Blinky has you fooled!
 
Joined
Oct 13, 2005
Messages
511
Haha! Do you think she can take them out without being hurt? I'm starting to recognize her "color language". When she's mad, she turns a brick red. When she's scared, she gets very smooth, and turns orange. When she's happy, she changes from the brown with white spots to all white, and flashes her eye spot from deep blue to tan. She is a character!
 

DHyslop

Architeuthis
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Dec 22, 2004
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When I saw Ivar get a crab he snuck up on it from above and behind--he draped himself over it and essentially wrapped an arm around each leg and claw. After seeing that I'm not too worried about the crabs getting him with the big claw.

The crabs aren't too big for him to kill, but he doesn't have the appetite to get anywhere near finishing them off. The fiddlers I just got from Sach's are considerably smaller so hopefully there will be less of them remaining for me to clean out of the tank. He hasn't eaten anything in a couple days. It has me a little bit worried, but I've also dropped the tank from room temperature to about 65 which I'm sure slows down his metabolism quite a bit.

Dan
 
Joined
Sep 8, 2006
Messages
2,390
Brock Fluharty;83981 said:
Haha! Do you think she can take them out without being hurt? I'm starting to recognize her "color language". When she's mad, she turns a brick red. When she's scared, she gets very smooth, and turns orange. When she's happy, she changes from the brown with white spots to all white, and flashes her eye spot from deep blue to tan. She is a character!

I imagine it's possible for a crab to get in a good blow or two. Blinky will figure out how to take the crabs out without getting pinched.

Einy's like a ninja now. He watches them, where they go. Hides around corners, waits for them to turn their back, sneaks up, and pounces. If they freak out, Einy lets them go and retreats, and tries again.
 

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