Looking for Recommendations on Filtration and Heating Systems!

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The MerBoss

Feeder Fish
May 1, 2019
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Hey guys! I'm about to launch into a very weird request, so bear with me here. A friend suggested I post here to get advice so here goes!

I'm not actually a fish keeper, per se. I run a company called Court of Mermaids which specializes in professional mermaid performers. We just acquired a gorgeous new tank to use at events for displaying a "live mermaid exhibit" of sorts. It's glass, 8 feet long by 3 feet wide and 4 feet high (720 gallons). Was an actual fish tank at one point, though I know nothing about what was kept in it. Guy who sold it to me gave me a bunch of PVC pips and some hoses which he said came from whatever old filter it used, but couldn't provide more details (he had just bought it himself and no filter was included; it was too big for him so he resold to us).

What I'm looking for is recommendations for filtration and heating for the sake of the girls swimming in it. In an ideal world I'd want a salt water system with salinity matched to that of the human body (so the water doesn't irritate the eyes and nose of the performer) and a heater that can get it to between 85-90 degrees F. I'm willing to look at fresh water filter systems. Must be decently portable and bonus points if it can be removed just prior to the performance pretty easily (i.e. pulling out the pipes after turning it off) but I understand if this isn't possible, and in that case a more discrete setup is ideal. The purpose of it is to keep things like dirt and dust out of the water for clear performances. The filtration system can be raised to any level of the tank since it will be behind a curtain, but if it could be kept on the ground and pump the four feet required that would be amazing!

I've looked at portable hot tub heaters, above ground pool filters, and other cheap fixes for filtration and heating, but I want to do this the right and safe way and advice or recommendations would be appreciated!
 
Pool filter and hot tub heater is probably not a bad idea.

There are some more details that would be useful:

How quickly do you need the tank to heat up before a performance?

How long will the performer be in the tank?

How long will the tank be setup for performances in one spot?

How often do you plan on putting new water into it?
 
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Pool filter and hot tub heater is probably not a bad idea.

There are some more details that would be useful:

How quickly do you need the tank to heat up before a performance?

How long will the performer be in the tank?

How long will the tank be setup for performances in one spot?

How often do you plan on putting new water into it?


The tank would have anywhere between 4-8 hours to heat up before a performance, sometimes longer if setup is the day before.

Performers will be in the tank for between 30 and 45 minutes. For most events we expect have an hour minimum break between shows, but for shorter corporate events it may be 2-3 hours total with mermaids back to back, in which case heating would need to remain in place likely.

I don't foresee it set up for more than 2-3 days maximum at events, but it will be set up for between events full time in my garage for regular trainings. I may not leave heating on but ideally would leave filtration on when set up in the garage to prevent growth of anything.

It'll get new water every event, and probably every month or two as needed when set up in the garage training space.
 
Because you are dealing with oils and proteins from human bodies, and tending toward salt water, I recommend using a protein skimmer ( foam fractionator)
Here is DIY one I built for a 500 gallon koi pond, from plans on koiphen.com.
It removes oil's, proteins, free floating algae and a host of other contaminants in the form of foam, even some parasites.
koi pond fractionation
it is called a Foam Phractionator in the DIY section
 
As a Southern Baptist, I too have performed in a tank in a skimpy outfit. ;)

Seriously, we're talking about short term use for creatures that won't mess in the tank.
They won't live in the water more than a few hours in every 24.
Simple overflows to an external canister would be fine.
Too much flow in a small box may equal a difficult performance.

Sending 700+ gals of saltwater down the drain seems a waste.

Chlorine is 100x cheaper, and if you all keep everything clean you won't need much.
BUT...some silicone isn't good for continuous chlorine exposure.

The stress of repeated tank movings also seems an issue. Is this tank tempered glass?
Is it on it's own trailer?

I would hesitate to put humans in a non-tempered tank. If some idiot got drunk and broke the glass, it could be very dangerous for everyone around. Seriously, again. One unintentional bottle flying could equal a fatality. 7000# of moving water is no joke. Be insured.

Good luck in your business.
 
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Hey guys! I'm about to launch into a very weird request, so bear with me here. A friend suggested I post here to get advice so here goes!

I'm not actually a fish keeper, per se. I run a company called Court of Mermaids which specializes in professional mermaid performers. We just acquired a gorgeous new tank to use at events for displaying a "live mermaid exhibit" of sorts. It's glass, 8 feet long by 3 feet wide and 4 feet high (720 gallons). Was an actual fish tank at one point, though I know nothing about what was kept in it. Guy who sold it to me gave me a bunch of PVC pips and some hoses which he said came from whatever old filter it used, but couldn't provide more details (he had just bought it himself and no filter was included; it was too big for him so he resold to us).

What I'm looking for is recommendations for filtration and heating for the sake of the girls swimming in it. In an ideal world I'd want a salt water system with salinity matched to that of the human body (so the water doesn't irritate the eyes and nose of the performer) and a heater that can get it to between 85-90 degrees F. I'm willing to look at fresh water filter systems. Must be decently portable and bonus points if it can be removed just prior to the performance pretty easily (i.e. pulling out the pipes after turning it off) but I understand if this isn't possible, and in that case a more discrete setup is ideal. The purpose of it is to keep things like dirt and dust out of the water for clear performances. The filtration system can be raised to any level of the tank since it will be behind a curtain, but if it could be kept on the ground and pump the four feet required that would be amazing!

I've looked at portable hot tub heaters, above ground pool filters, and other cheap fixes for filtration and heating, but I want to do this the right and safe way and advice or recommendations would be appreciated!

Not trying to start another "tank size war" but I can't believe you're trying to keep mermaids in a 750g -- any LFS worth their water ought to be able to tell you 1,000 gallons should be the absolute minimum. :)

Btw, do you have any videos...?
 
Not trying to start another "tank size war" but I can't believe you're trying to keep mermaids in a 750g -- any LFS worth their water ought to be able to tell you 1,000 gallons should be the absolute minimum. :)

Btw, do you have any videos...?
I was thinking 700g sounded small for a 5'+ fish/chic. 1000g would be better but still small for her entire life.
 
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I'll pay attention to this when MFK has the proper taxonomy and feeding advice on the site.
 
MonsterFishKeepers.com