I started an online search, and quickly realized that for practical purposes of selecting containers for housing fishes, there are too many variables to quickly estimate the risks of using plastics.
Does anyone have good anecdotal evidence or actual knowledge of types of plastics that may or may not interfere with the spawning of captive fishes?
When I worked for a Toxicologist, a long time ago, he would only use polypropylene plastics in his lab. However, I did find this article indicating that polypropylene can contain di-(2-ethylhexyl) phthalate at what I consider to be a rather high concentration (10 ppm if I did my mental math correctly). http://www.ukm.my/mj...ng Kian Wei.pdf
I've run across a number of sites claiming that polyethylene and polypropylene are phthalate and BPA free, but I'm not entirely convinced.
Oh, BTW, the underlying motivation for the question is simply cost. Glass aquariums are not cheap.
Affects of Phthalates Leached from Aquarium Enclosures in Spawning Success
Started by
Guest_guyswartwout_*
, Sep 02 2014 10:05 PM
11 replies to this topic
#2
Michael Wolfe
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- Board of Directors
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- North Georgia, Oconee River Drainage
Posted 03 September 2014 - 01:16 PM
I use 100 gallon Rubbermaid stock tanks in the backyard and have had successful breeding a of American Flag Fish, Golden top minnows, and Bannerfin shiners. That last one was very successful and very productive in the second year. Of those I captured a few and brought them inside and they seem normal in every way.
Oh and for cost. I think I have only paid about $60 for 100 gallons and then don't even have to feed the fish much (bugs in the south you know).
Oh and for cost. I think I have only paid about $60 for 100 gallons and then don't even have to feed the fish much (bugs in the south you know).
Either write something worth reading or do something worth writing. - Benjamin Franklin
#3
Guest_guyswartwout_*
Guest_guyswartwout_*
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Posted 03 September 2014 - 08:42 PM
Thanks for that Michael. I'm proof that a person can be too cautious. Now maybe I'll start keeping some fishes instead of spending 99% of my time planning.
Oh hey, how do you guard against land and air based predators?
Oh hey, how do you guard against land and air based predators?
#4
Michael Wolfe
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- Board of Directors
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- North Georgia, Oconee River Drainage
Posted 03 September 2014 - 09:24 PM
I have never had the problem... maybe because these are not sunk in the ground (so they would be hard for a raccoon or opossum or cat to get into without slipping in and having an un-welcome swim)... and since they are right up beside the house, we have had no visiting hawks or wading birds.
It might be an advantage to being kinda small and in a subdivision. Although I have plenty of frogs and lizards around.
Water Lily and Water Shield are my best friends (along with associated temperature stratification) here in the south, where I am most afraid of boiling my fish.
It might be an advantage to being kinda small and in a subdivision. Although I have plenty of frogs and lizards around.
Water Lily and Water Shield are my best friends (along with associated temperature stratification) here in the south, where I am most afraid of boiling my fish.
Either write something worth reading or do something worth writing. - Benjamin Franklin
#5
Michael Wolfe
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- Board of Directors
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- North Georgia, Oconee River Drainage
Posted 03 September 2014 - 09:48 PM
Here is a thread form some years back when I first set up my stock tanks, you can see them up against the back of the house.
http://forum.nanfa.o...l__+stock +tank
And in this thread, you can see a third tank sitting on the other side of the back door at the very beginning of the video clip (and of course then you can see baby fish swimming with the water lily stems)...
http://forum.nanfa.o...l__+stock +tank
http://forum.nanfa.o...l__+stock +tank
And in this thread, you can see a third tank sitting on the other side of the back door at the very beginning of the video clip (and of course then you can see baby fish swimming with the water lily stems)...
http://forum.nanfa.o...l__+stock +tank
Either write something worth reading or do something worth writing. - Benjamin Franklin
#6
Guest_guyswartwout_*
Guest_guyswartwout_*
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Posted 04 September 2014 - 10:17 PM
Wow, very nice; and the video - very classy. What do you do with all the babies? I guess you have enough space to grow them out, so there's no urgency to relocate them.
#7
Michael Wolfe
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- Board of Directors
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- North Georgia, Oconee River Drainage
Posted 05 September 2014 - 06:44 AM
I brought about seven I think into a community tank in the basement that had three or four adults in it and put the adults outside. Other than that I am just growing them outside for now.
Either write something worth reading or do something worth writing. - Benjamin Franklin
#8
Guest_Stickbow_*
Guest_Stickbow_*
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Posted 06 September 2014 - 12:52 PM
Michael, can you share a link to the article that initial inspired you to use the stock tanks? Apologies if I missed it elsewhere.
#9
Michael Wolfe
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- Board of Directors
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- North Georgia, Oconee River Drainage
Posted 06 September 2014 - 01:21 PM
The original link to it seems to be broken, but I posted the full text in this thread some years ago...
http://forum.nanfa.o... tub#entry70533
http://forum.nanfa.o... tub#entry70533
Either write something worth reading or do something worth writing. - Benjamin Franklin
#10
Michael Wolfe
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- Board of Directors
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- North Georgia, Oconee River Drainage
Posted 06 September 2014 - 04:42 PM
Feeding fish today and noticed something really small and black in the stock tank that was emptied to dry and cleaned with peroxide this spring before I put some bluespotted sunfish in there that I got from Stephen B... so I think I can add Enneacanthus to the fishes that will successfully breed in the 100 gallon stock tank setups. I will know for sure in a month or so... I will clean out the tank and dipnet my way through it several dozen times and see who I catch... if I have more than I started with, I will bring some (but not all) into over-winter.
Stephen, are you still out there... do you know when and where those bluespotteds came from?
Stephen, are you still out there... do you know when and where those bluespotteds came from?
Either write something worth reading or do something worth writing. - Benjamin Franklin
#11
Guest_sbtgrfan_*
Guest_sbtgrfan_*
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Posted 06 September 2014 - 09:36 PM
PM answered. Sorry I've missed this. When and where those were collected escapes my memory as I had them for quite awhile and we collect them from many locations here in SC. Sorry!
#12
Guest_Elassoman_*
Guest_Elassoman_*
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Posted 07 September 2014 - 12:07 PM
Just FYI. I have been in contact with a number of plastics manufacturers in the past few months. Sterilite storage products contain no phthalates or BPA. As cautionary note, not all airlines are safe. I bought some vinyl line from Lowe's, and that stuff degraded in a couple weeks, almost certainly leaching some material into the tank.
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