I had an electric Aiptasia Zapper that was not the Majano Wand, but was based on it's construction. It was sold for a short while earlier this year by the Canadian company SWC, That makes the skimmers. Apparently, they bought a couple units from the inventor of the Majano Wand, Paul B. They then knocked them off and started selling them in the US. I bought mine through TBAquatics.
I bought mine thinking it was the one by Paul B and started using it. Same basic look and design, but my first one stopped working after about 5 uses. I contacted TB Aquatics and they sent me a new one as a replacement. This one worked a few times then stopped as well. I asked for a refund and it was given.
Then shortly after that, Patent infringement threads were given and Aiptasia Zapper sales were discontinued.
Impressions aside from the poor quality of my knockoff unit:
-Electric majano killers work via electrolysis, and a byproduct of the electrolysis is chlorine gas, so even the inventor (Paul B) wasn't sure if it was the electricity or the chlorine produced that was actually killing the anemones. Prolonged use in the tank will produce the distinct odor of chlorine, and I believe there is a general warning to not use the Wand for more than a certain amount of time, assumably because of the danger of escalating chlorine levels to fish and corals with long periods of use.
-You can use these to control any living coral. Touch a spot and apply the juice, and what it touches will die. My unit (when working) cut through zoas like a hot knife through butter.
-Do electric Zappers completely kill Aiptasia/Majanos? Yes and no. Yes they do
if you are able to get the entire anemone, including the foot. But the reality is that most aiptasia in reef tanks are located in and on live rock, so using an electric zapper is only as effective as chemical means because the user has no way of knowing if they are even touching the foot of the aiptasia, and if you don't get it all it grows back. So the answer is no for a percentage of aiptasia you try to kill that are anchored inside live rock, same as it is for Joe's Juice, AiptasiaX, or my personal favorite, Reef Napalm.
-Total elimination or control? Control only, IMO. I would not expect to be able to totally eliminate aiptasia and majanos with a zapper or chemical means. You simply can't get to all of them. Biological control would probably be the best bet for total elimination, outside of a tank breakdown and bleaching all the LR.
Advantages over chemical means? Yes, some. Definitely nice to not have to get yourself all wet in the tank to kill some aiptasia. Another
big plus to a zapper is the ability to spot kill aipatasia/majanos in the middle of a zoa colony or next to an acropora without the collateral damage you can get from chemical killers. No chemicals to fall on desirable corals, and no need to turn all flow off in the tank like you have to with chemical treatments.
-Fun factor? 10 out of 10 easily. It is
FUN to electrocute aiptasia and majanos!
-Product durabilty? I cannot speak for the Majano Wand as I did not own it. The knockoff I bought was a piece of crud. I will be eager to see if the Majano Wand from the real inventor lasts long, as that was the main problem I had with the knockof Zapper I bought. But for anyone that buys the real deal, definitely take advantage of any warranty the manufacturer offers if you need it. If the Majano Wand is durable, then I would gladly buy one.