I used two billboard/banner vinyls to line the "raceways/raft tanks" and was wondering if anyone knew if it would be a problem (in terms of dyes leaching or poisoning the water) to use the printed side up.
Does anyone know if they have any metals in the inks or what type of ink is used and the process? I've googled it but didn't get specific info needed.
I also put a call in to the manufacturer and waiting to here back.
I know the online source that sells them, says you must place ad side down when using, but don't think it was for that reason. The ad will mostly be covered up by the rafts and the colors will mostly only show on the top 8" of block and slightly on the sides. It's much lighter in color then the black back side, so will be a lot less heat absorbing and it looks kind of fun.
There's no offgassing smell typical of vinyl. I am guessing that is the result of being exposed to the elements.
Thanks, Michelle
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Theres been a pile of talk on the barrelponics yahoo group about using the billboard vinyl as safe tank liners. They are using em printed side down tho.
I contacted the place that does almost all the local billboards here and was told they destroy or landfill all the old vinyl; because of possible logo, copyright infringment stuff ( this makes no sense to me, but they said it was company policy)
So, my solution to cheap liners so far has been woven poly tarps ( the heavier duty silver ones)
Where did you find the old billboard vinyl online Michelle, a link would be greatly appreciated.
Take care
Steve
Hi, I'm sorry to be a downer here, but I just read this and you guys flagged my super panic mode. I'm not sure you realize what kind of chemicals they use to gesso those vinyl banners, and considering that I've smelled the coating as well as cut out some of that vinyl adhesives to place on those banners, pleasepleasepleasepleasepleaseOhForTheLoveOfFISH! don't use them.
I'd rather you use a pond liner in the water. There is some seriously bad and toxic stuff in there.
Maybe use the billboard tarps as a sunscreen instead?
Emma, I'm not sure what you are reffering to when you say when they gesso those liners. I am an artist and I only know of the gesso I've used on canvas. The liners I have have did not smell and they have been in place now with fish for over a month and the fish seem fine. I have tialpia and small goldfish that are growing quite rapidly. The liners did not smell and didn't even have the typical offgassing compared to the new liner I bought, since it has been out in the sun for a long time already.
I looked into the dyes as well and all are supposedly vegetable based.
Besides, the bioslime is building up and even IF there were toxic leaching (like others have been concerned about the plastic containers leaching) then I think that in a built up ecosystem that the beneficial bacterias would handle it..same as in compost. In traditional compost the benefical bacteria/microbes can break down the most toxic substances.
Do you have an aquaponics system? I am curious what materials you use or are you just passing along panic and fear.
The pros definitely out way any possible cons . The more people that can get into this as sustainably as possible (not having to PURCHASE new materials and repurposing items that would normally end up in landfilles etc) the better.
Emma Lysyk said:Hi, I'm sorry to be a downer here, but I just read this and you guys flagged my super panic mode. I'm not sure you realize what kind of chemicals they use to gesso those vinyl banners, and considering that I've smelled the coating as well as cut out some of that vinyl adhesives to place on those banners, pleasepleasepleasepleasepleaseOhForTheLoveOfFISH! don't use them.
I'd rather you use a pond liner in the water. There is some seriously bad and toxic stuff in there.
Maybe use the billboard tarps as a sunscreen instead?
Wow, while I am not pleased at the attempt of character assassination here, I would like to clear the air by providing some of my background. Yes, I have my own aquaponics system, that I've had going for almost a year and have researched upon for over a year. You are welcome to peruse my photographs on my profile if you require proof of this. I understand that you may also be an artist. I happen to be a graphic designer who has toured and delved into the world of printing, and there is a chemically bound gesso-like coating that gives any banner it's colouring. A banner is made up of 3 layers - a top outer, a middle heavy-duty strengthening mesh, and a bottom outer layer. These two outer layers are dragged through a thick paint-like gesso material containing a multitude of colorants, paint thinner, some melted rubber-like material, and a multitude of chemicals to help process and dry it. Having watched this process with my own two eyes was fascinating and the particular reason why I advise strongly against using such materials, no matter how old.
That odor you smelled off of your newer one is part of that. Using recycled banners without much of an odor does not mean that the toxic chemicals have evaporated over time - merely that the amount leached is not detectable by your nose any longer. These banners have been known to leech chemicals into the air for many, many years after, and I don't believe that process would be slowed or changed at all when swapping the aero environment with a more wet one.
I understand your intent, and deem it noble hence the suggestion for a different purpose instead of a liner, but I do believe you are putting your fishes' lives at danger and your own should you consume any plant or animal out of your system using those banner liners. A month is certainly not enough time to deem it safe - any food scientist (I work directly with over a dozen of them) will tell you that. That is not fear mongering, merely a concern for your safety and the safety of your environment.
Regarding the vegetable/soy-based inks - that is ONLY the ink applied to the banner with the decorations/logos/On Sale Now! memo, etc. You are welcome to disbelieve me, but I have said my piece and given you my fair warning, so I will let this go.
Michelle Silva said:Emma, I'm not sure what you are reffering to when you say when they gesso those liners. I am an artist and I only know of the gesso I've used on canvas. The liners I have have did not smell and they have been in place now with fish for over a month and the fish seem fine. I have tialpia and small goldfish that are growing quite rapidly. The liners did not smell and didn't even have the typical offgassing compared to the new liner I bought, since it has been out in the sun for a long time already.
I looked into the dyes as well and all are supposedly vegetable based.
Besides, the bioslime is building up and even IF there were toxic leaching (like others have been concerned about the plastic containers leaching) then I think that in a built up ecosystem that the beneficial bacterias would handle it..same as in compost. In traditional compost the benefical bacteria/microbes can break down the most toxic substances.
Do you have an aquaponics system? I am curious what materials you use or are you just passing along panic and fear.
The pros definitely out way any possible cons . The more people that can get into this as sustainably as possible (not having to PURCHASE new materials and repurposing items that would normally end up in landfilles etc) the better.
Emma Lysyk said:Hi, I'm sorry to be a downer here, but I just read this and you guys flagged my super panic mode. I'm not sure you realize what kind of chemicals they use to gesso those vinyl banners, and considering that I've smelled the coating as well as cut out some of that vinyl adhesives to place on those banners, pleasepleasepleasepleasepleaseOhForTheLoveOfFISH! don't use them.
I'd rather you use a pond liner in the water. There is some seriously bad and toxic stuff in there.
Maybe use the billboard tarps as a sunscreen instead?
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