Electrocuting Mojanos

[wbdevers]

Paul, first, thanks for the wonderful engineering and second thanks for sharing!

I've got a couple of questions on building one though. 1) Does the graphite need to be sharpened or can it stay blunt? And 2) Does the graphite erode and if so how do you extend it (assumption of using a long piece to begin with)?

[Paul B]

Wes I am PMing you

[wbdevers]

Thanks Paul. BOL!

[tgunn]

So I gave this a try. Two stainless electrodes worked pretty well with the exception of the fast corrosion on the one.

Using a graphite rod (graphite art pencil) didn't work so well though. With my 12v 350mA wall wart I could only measure a 2-3V difference between the SS rod (now using a tig welding rod instead of syringe needles). I'm guessing I would need a much stronger power source then?

Also, the graphite seemed to turn to mush pretty quickly. Is this what you observed?

Thanks!
Tyler

[rhdoug]

Hi Paul, you have a PM.

[subshop]

Paul i sent you an email.

[snapperface]

So has anyone actually got rid of all there aiptasia and never came back?

[wesley6610]

Any updates on the zappers use in their tanks to report?

[Amoore311]

Mine worked just fine.

I'd say I had 20-30 Aiptasia that I got rid of. Sometimes they would come back, but eventually I took them all out.

[alaskan84]

I got one from paul a few months back now and I just love it. I honestly do not have many aiptasia to kill, and they are kinda hard to melt when they first sprout and can retreat/close up into the live rock. I would imagine larger majanos or aiptasia's would be easier. I get more use out of mine melting away trash palys etc. I have some ugly palys that started to choke out an orange ric, and after a few days of repeated meltings the ric is free of the stranglehold! I've ran the zapper for at least 30 second intervals when melting and have never seen any adverse effects on my tank. On a side note, the snails and crabs LOVE to feed on the melted flesh of palys

[Palting]

I use Paul's MojanoWand for almost any softie I want to kill. I've used in on errant zenia, mushrooms, and even a colony of GSP on a rock. Mushrooms are the esiest of these "non-traditional" pests. They close up when I stick the probe into the mouth, making it easier to hydrolize them!! So gratifying to see them bubble up and shred/melt!!

Yeah, I noticed the tangs love those white melted flesh, too!

[donald altman]

without reading this entire thread could it be that your just making hydrogen and that is causing the buggers to die? If so I wonder if you could simply inject them or drip a touch of hydrogen peroxide on them.

[dwd5813]

Originally Posted by mth1993

Looks like a hospital is copying you idea only likely generating some serious revenue:

New Treatment Option Uses Electrical Pulses to Kill Cancer Cells

DETROIT - A new treatment that uses electrical pulses to kill cancer cells offers a viable alternative for patients with malignant tumors in difficult-to-reach places.

The treatment uses a minimally-invasive surgical ablation system called the Nanoknife®, and Henry Ford Hospital is the first to use it to treat patients in Michigan.

The Nanoknife® is not a knife but several needle-like electrode probes that deliver quick bursts of short, electrical pulses in and around the tumor, killing the cancer cells without harming surrounding healthy tissue.

Vic Velanovich, M.D., division head of General Surgery at Henry Ford Hospital, has used the Nanoknife® to treat four cases of pancreatic cancer. He says cancerous cells in all four cases were successfully treated and killed.

A 63-year-old Harrison Township woman was the first to undergo the treatment Nov. 15 at Henry Ford.

Wow, I never would have expected to read Dr. Velanovich's name on a reef board. I attended a presentation of his on treating disorders of the digestive system and not long ago assisted in a procedure of his. Very talented man.

[erikgsxr6]

Thank you Paul,
I have to reply on here because I do not have 10 posts I usually dont have a need to post because I can just do a search and find days of information to read without having to ask any questions.
I also wanted to say I love reading your threads they are very educational with a bit of humor thrown in
Erik

[Paul B]

Thanks Eric, most people say they are very humorous with a little education thrown in, very little.

[pscott99]

I made my own using a laptop power supply. I tried to make the lead pencil work but got no voltage from it so left it bare wire. Power is 20 volts.
I killed 20 or so with the power on the whole time. Fish and inverts are all fine. But my softies are in revolt and it may or may not have killed a clam. It had been not doing well. My softies have shrunk down now for three days straight. I did a water change at the same time so maybe there was too little water in the tank ? ( about 15 gal ) Maybe the aiptasia kill bits are toxic ? Or the more obvious too much voltage ? Any ideas. The softies are shedding but I hope they will come back. I've done worse and they have survived.

[yardboy]

Originally Posted by pscott99

I made my own using a laptop power supply. I tried to make the lead pencil work but got no voltage from it so left it bare wire. Power is 20 volts.
I killed 20 or so with the power on the whole time. Fish and inverts are all fine. But my softies are in revolt and it may or may not have killed a clam. It had been not doing well. My softies have shrunk down now for three days straight. I did a water change at the same time so maybe there was too little water in the tank ? ( about 15 gal ) Maybe the aiptasia kill bits are toxic ? Or the more obvious too much voltage ? Any ideas. The softies are shedding but I hope they will come back. I've done worse and they have survived.

Did you consider that the graphite electrode ("lead" pencil) keeps the copper wire from deteriorating? Your problem might possibly be copper poisoning. I've never noticed any reaction in my tanks, 10g to 200g, from anything other than what the electrode touches.

[MrineLfRlz]

Anymore updates on how these are working for everyone so far?
Ive seen some zappers online but are these the same types seen here?

[Ron Reefman]

I have had my fair share of success with the Majanowand. It works as well or better than using a much more expensive 1.4W laser (I started that thread : http://www.reefcentral.com/forums/sh...ighlight=laser). The laser can work, but you need real access to the foot of the anemone. You can hurt it, but if you don't burn the foot, it will grow back in a matter of days.

My issue has been the long handle of the wand causing the same problem I have with the laser, not being able to get into the hole where the anemone's foot is attached so you can kill the entire thing. However, I understand that a new short handle version of the wand is in the pipeline as we speak.

I have a 180g DT (many/most of you have probably seen it)



Well, it's so full of live rock and large coral colonies that it's very difficult to get any chemical treatment (Aiptasia-X, Joe's Juice, etc.), laser or the long handle wand into a lot of places I have aiptaia and majanos, like under rock overhangs and in between corals. I can't use peppermint shrimp because my banded coral shrimp thinks they are fancy food just for him. I can't do berghia nudibranch because I have 3 wrasses that think small live critters are expensive food for them (although they have just about cleared my tank of planaria flatworms... YEA!!!). I've tried Copperbanded Butterflyfish and a Mueller Butterflyfish, but the other fish in the tank are just too aggressive at meal time and the butterflies are such slow and deliberate eaters they end up starving (and I hate killing fish). I think that is about all of the possible in tank cures, right?

So I've kind of let things go over the last 6 months, and the population explosion seems to have slowed way down. Heck, some of the majanos have morphed into an attractive green color and started a patch on a bare rock (hard to find in my tank ) and look more like zoas than anemones! Just kidding... sort of...

So I am waiting for either a short handle majanowand or a new suggestion...

[MrineLfRlz]

Originally Posted by Ron Reefman

I have had my fair share of success with the Majanowand. It works as well or better than using a much more expensive 1.4W laser (I started that thread : http://www.reefcentral.com/forums/sh...ighlight=laser). The laser can work, but you need real access to the foot of the anemone. You can hurt it, but if you don't burn the foot, it will grow back in a matter of days.

My issue has been the long handle of the wand causing the same problem I have with the laser, not being able to get into the hole where the anemone's foot is attached so you can kill the entire thing. However, I understand that a new short handle version of the wand is in the pipeline as we speak.

I have a 180g DT (many/most of you have probably seen it)



Well, it's so full of live rock and large coral colonies that it's very difficult to get any chemical treatment (Aiptasia-X, Joe's Juice, etc.), laser or the long handle wand into a lot of places I have aiptaia and majanos, like under rock overhangs and in between corals. I can't use peppermint shrimp because my banded coral shrimp thinks they are fancy food just for him. I can't do berghia nudibranch because I have 3 wrasses that think small live critters are expensive food for them (although they have just about cleared my tank of planaria flatworms... YEA!!!). I've tried Copperbanded Butterflyfish and a Mueller Butterflyfish, but the other fish in the tank are just too aggressive at meal time and the butterflies are such slow and deliberate eaters they end up starving (and I hate killing fish). I think that is about all of the possible in tank cures, right?

So I've kind of let things go over the last 6 months, and the population explosion seems to have slowed way down. Heck, some of the majanos have morphed into an attractive green color and started a patch on a bare rock (hard to find in my tank ) and look more like zoas than anemones! Just kidding... sort of...

So I am waiting for either a short handle majanowand or a new suggestion...

Well last week i bought 10 peppermints for my 75 and 3 more for one of my frag tanks down stairs ive seen no decline yet and ive seen my shrimp ive put in only twice.
Im really thinking about either a zapper or CCB or a aiptasia eating filefish is a zapper the best bet right now these things are getting out of hand and i want to add more rare expensive corals but the ones i have now the zoas mostly and chalices are feeling the heat sps seem to be holding there own right now but the problem needs to be handled.
BTW ive tried aiptasiaX and ms. wages/ rodi mix also they just seem to come back in greater numbers so what should be my next move?

[Palting]

Originally Posted by MrineLfRlz

Im really thinking about either a zapper or CCB or a aiptasia eating filefish is a zapper the best bet right now

It depends on what your expectations are. I have used the zapper for the errant majano, aptasia, and even ugly mushroom with excellent success. It does not "eradicate" them never to come back again. They do come back, often in another spot, and you just have to zap them again. Weeks to months go by between "treatments".

The problem is when your reef tank starts to fill up with coral. I have a lot of SPS in my tank, all growing with overhanging and interlacing branches. Eventually, it gets hard to reach under or in between the dense branches with the wand. I don't believe even the short handle will solve that issue. However, at this point, it doesn't really matter anymore, because the coral have so densely populated the tank that majano and aptasia grow only in the unseen parts of the tank. In a relatively open young tank, I highly recommend the zapper for intermittent use to control the pests. Plus, there is just something so exhilarating about seeing those darn pests get vaporized into little bubbles!! LOL!

[MrineLfRlz]

Well ive heard alot of great things about matted filefish and they arent that expensive so i will try this for now i may go ahead and get a zapper later. I will see how this guy works out for now should be here in a few days.
Doesa paul still make these on the side or not because of the patent deal?

[Palting]

Originally Posted by MrineLfRlz

Doesa paul still make these on the side or not because of the patent deal?

Paul owns the patent. It's his invention.

[Kjdejarnett12]

Looks like the same idea as the manjano wand. I used that and killed every manjano in my tank that i could possibly see...or so I thought. They came back with a vengance to the point i literally had to take my rock out of tank and boil it to get rid of it all and start all over. I still get the occasional manjano pop up here and there but I have found Red Wine Vinegar to be the best remedy to kill manjano.

[wgood33]

Originally Posted by donald altman

without reading this entire thread could it be that your just making hydrogen and that is causing the buggers to die? If so I wonder if you could simply inject them or drip a touch of hydrogen peroxide on them.

It's not the hydrogen, it is definitely the shock. I accidentally touched my ground probe and I'm telling you it IS the electric shock that is nailing them.