Electrocuting Mojanos

[Paul B]

Apply for a patent now

I already have a fish tank related patent. Too much trouble and money.
I patented this years ago for $6,000.00

http://www.breedersregistry.org/Arti...l_b/paul_b.htm

[stormrider27]

Originally Posted by ritter6788

Apply for a patent now

then liability umbrella insurance.

[Paul B]

then liability umbrella insurance.

Of course I have that also

[Seths Dad]

Tried this about 3 weeks ago, but used a 6v lantern battery and thermostat wire taped to a dowel. I only had 1 manjano & 1 aptasia, fried both of them and so far they have not come back. It took 2 shock treatments for the manjano only 1 for the aptasia, and yes it does bubble.....very satisfying! I saw it in another thread on RC about killing aptasia not too long ago. If I have more show up I will definitely use the needles to keep the copper out.

[ritter6788]

Originally Posted by Paul B

I already have a fish tank related patent.

I know you do. That's why I posted that. I've read the whole thread about your tank.

[Metal Man 1221]

hahaha ..... RIDE THE LIGHTNING!

seriously though that is a very creative invention
nice job

[gbbari]

Originally Posted by username in use

I wouldn't dare go past 1.21 gigawatts. Who knows where you'll end up.

I'll bet this went right over most of the heads reading this.
Oh well, back to the future….

[bubbly]

It sounds like a fun experiment, but all you need to do to get rid of majanos is half-cover them with a shell or piece of LR (so they are in the shade).

They will climb on top of the shell or rubble piece and you can lift them out of the tank easy as pie.

This would be worth it for the aptasia, but the majanos are easy...

[theyammieguy]

Do you think a 12v would work?

[redfishsc]

There was a thread similar to this a while back, and they were using regular 9v smoke detector batteries.


So I tried it.

Killed majanos and aiptasias. For a few days, and they returned.


No doubt some higher voltage would do the trick better though.

[IslandCrow]

A car battery is only 12 volts and is too low, also if you short out the leads of a car battery in your tank, you will probably blow up the tank.

There actually are 24V automotive batteries. We used them on the HMMWVs I worked on during one of my deployments, and I'm guessing there are other heavy duty vehicles that use them. I did kind of figure that wasn't what you were talking about, though. I think I still have a scar from grounding myself out on those bad boys. I guess I should have looked a little harder for that insulated wrench instead of deciding to "just be careful".

[Paul B]

There actually are 24V automotive batteries.

Yes there are and you could put two car batteries in series and get 24 volts DC but a typical car battery can put out about 400 amps or more which to put it into perspective, a typical house has a 150 amp electrical service and at any given time your house is using about 35 amps. (with no AC or electric stove.)
400 amps can power almost 12 houses. They can not do it for more than a few seconds but if you put that in your tank and short it out like we are doing with this 24 volts, you will blow up your tank and maybe the wall next to it.
400 amps is carried on a wire where the copper is about an inch thick.
I used hundreds of miles of it in my trade.
You can use a car battery but you must put it in series with a resistor like a light bulb. That way the current will be limited to whatever can go through that bulb, and shorting out the leads will just light the bulb.
Just stick to small lantern batteries which will do nothing if you short them out except get a little warm.
The voltages we are using are not really electrocuting the anemomes. That is not enough voltage. To "electrocute" an anemone, you would need the same voltage as we would need to electricute us. So I am thinking that the electrodes either burn the anemones (which I doubt) or the gasses the electrodes are emitting are oxidizing the tissue of the animal. That is what I think but I am not the God of killing mojanos so I am not really sure but large pieces of the animal do turn into slime and float away.
If it were just electrocuted, it would remain in one piece and just die.

[Glove]

"You can use a car battery but you must put it in series with a resistor like a light bulb. That way the current will be limited to whatever can go through that bulb, and shorting out the leads will just light the bulb."
-very important part!


I wonder what resistance value they hold as fuzes?

[Paul B]

I've read the whole thread about your tank.

You must like to read, I didn't even read it all

I wonder what resistance value they hold as fuzes

The gap of an auto light bulb is about 1/4" so you would ned about 12,000 volts to bridge that. And the current would be limited to the filiment holders which I would imagine would be about one amp.
Just a guess of course.

[dogstar74]

Can you just use a 1A 24V wall wart? Use a door bell button to activate.

[Paul B]

Can you just use a 1A 24V wall wart? Use a door bell button to activate.

I don't know because that puts out AC current and I an using DC. You can buy a cheap rectifier in Radio Shack for a couple of bucks and turn that into DC

[discocarp]

Wow Paul. You are crazy, and I absolutely love it! Well done. I am also interested to see if they return, and how this works on aiptasia.

[fishtankdon]

Very interesting, tagging along for sure.

[paraletho]

Paul is it quick? Does it get them before they can retract into their hidey holes? I've got a good copperband in my 125 but I don't know if I can catch him. The problem is in my 58. Sounds like this may be the answer. Tagging along.

[Paul B]

Paul is it quick? Does it get them before they can retract into their hidey holes?

UIt's not that quick, you need to zap them for about 10 seconds to get the full treatment.
They retract, screaming all the way

[Paul B]

I am now fairly sure it is the gas generated from one of the electrodes that destroys the mojano and not the current.
Here is a close up of the electrode emitting the gas. (I am not sure if it is oxygen, hydrogen or chlorine)
The anemone turns white and totally disentigrates and becomes part of the bubbles.

[jenglish]

Is it coming off the negative or positive terminal?

[Paul B]

Is it coming off the negative or positive terminal?

You know, I knew someone was going to ask that and I forgot to look.
The next time I run the thing I will have to remember to check it out.
I may modify mine to just have the electrode protruding that produces the gas and have the other one up a little way away from the tip because it is easier to just stick one electrode in a mojano.
The animal can't return, there is absolutely nothing left except maybe a little white goo.
The rest of it looks like white slime which is carried away with the bubbles.
You should hear what the mojanos are calling me.

[jenglish]

Originally Posted by Paul B

You should hear what the mojanos are calling me.

Probably nothing you haven't heard before

I was thinking of this diagram:

[Paul B]

Nice diagram, what is it telling me?
I know electricity splits water into hydrogen andoxygen