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What letters do you have to listen to? I send and receive PM's all the time and have never had to listen to anything. It's just a matter of putting the person's name in to the "To" box and typing a message.
No, different skeletal structure. It more of an acan type skeleton to it. I bought one on my last trip down there but my urchins took it into the rocks and I didn't find it in time.
The "tubinaria" definitely isn't a duncan. Sonny lists it as an Aus blue carpet. I have tried to track down a scientific name but no luck so far. I will see if I can get one before the meeting.
You can always have somebody unplug each piece of equipment while you have your hand in the tank. When the shock stops you know what piece is causing it. If you have a heater in the tank I would start with that.
Looks like the Typhoon comes with a DI bypass. It is used for flushing the system when first hooked up. This way it doesn't waste your DI resin.
From AWI website:
Take a look at an Oceans Motion. They are great for alternating flow on a closed loop.
http://www.oceansmotions.com/store/?osCsid=0151e7efc79df20c95b2819891978785
Then you have the problem of trying to bond glass and acrylic together in a structural manner. You would either need to use a glass tube or use acrylic tanks.
Then comes the issue of getting flow through the tube. You would basically need to have an overflow in one tank and the return in the...