Aquaponic Gardening

A Community and Forum For Aquaponic Gardeners

Hi all! I'm a noob to the community, so please accept my apologies if this has already been covered elsewhere. Does anyone have experience with liquid sealers like drylok and bluemax? The system I'm building will use galvanized steel stock tanks (got a deal on them), and I don't want to leave the zinc coating exposed in my tanks. Any one who has used these or a similar product, PLEASE chime in. Or paste a link to the existing thread.

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One thing to keep in mind is that you do not want direct sunlight falling onto your fish tank water to prevent algae growth. Making your cover large enough to shade the sides will help keep the metal from getting excessively hot.

Fishy, an aquaculturist friend with many years experience in the field suggests Henry's asphalt coating (henry.com) or polyurea (polyurea.com).  He says the Henry's stuff is a pain to apply, but it works; and the polyurea thing might be pricey.  You can try to sort through the products they offer on their websites, or if you want, I could pick his brain further.  He also said overall, it's easier just to go with plastic tanks...

Repurposed billboard tarps have worked great for me, and the price is really great, if you're not determined to have a coated surface.  I think I have a picture posted on my page.

Just an fyi on the billboard liners, they are not all created equal and please put them print side down if you are worried about any chemicals leaching.

Some of the billboard tarps will be great but others will be full of holes and abrasions that will leak.  I prefer to use them to make wicking beds where it doesn't matter if they leak a bit.

HERE is the product I ended up going with. About $120 for the gallon kit (2 gal total vol). Significantly cheaper than the products I found like this, and is designed for potable water tanks. Some people might think $120 is pricey, but i think of it as cheap, one time insurance. I never have to wory about a liner ripping, don't have to worry about chemicals leeching into my water, I don't have to worry about my tanks rusting from the inside out. Coat it twice, and I'm done.

 

POTABLE WATER EPOXY

Thanks for the info Fishy.  Will file that away for future reference.  Best wishes with it.  Looking forward to checking it out!

Fishy McFisherson said:

HERE is the product I ended up going with. About $120 for the gallon kit (2 gal total vol). Significantly cheaper than the products I found like this, and is designed for potable water tanks. Some people might think $120 is pricey, but i think of it as cheap, one time insurance. I never have to wory about a liner ripping, don't have to worry about chemicals leeching into my water, I don't have to worry about my tanks rusting from the inside out. Coat it twice, and I'm done.

 

POTABLE WATER EPOXY

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