Hey I am building a tank like almost exactly like yours because you had a pretty good design. When you fill fill it with water for the first time DON'T PUT IT INSIDE YOUR HOUSE. It might burst!. It most likely won't but with homemade tanks you never know. I was just wondering what you used to coat it with. I need to know all the layers please. Thanks in advance. You have the best design i have ever seen and it looks the coolest.
Uhm... I did fill it inside my house the first time I filled it... Lucky for every one it didn't BURST! I recon the secret is to let everything cure 100% before filling the tank. Silicone can take weeks to fully cure, even if the bottle says 24 hours.
As for the coating of the tank;
1 layer Polyester resin
1 layer Polyester resin + chop strand mat (fiberglass)(chop strand overlapped on all seems, thus making all seems double fiberglass layers)
1 layer Polyester resin for good measure
4 layers epoxy all over. Additional layers on the bottom and seems. (I had some left over)
as for what type of epoxy:
The epoxy is a 2 part, food grade, ceramic coating epoxy. I got it at a place called FlowCrete in Johannesburg South Africa. To quote the guys there when I asked how long it would last in this application "Many, many years sir. Many years." It set me back SAR500 for 6 liters of the stuff (+-$70 for 1.5 Gallons). Applying it in winter time is a bit tricky, because it goes tacky as hell if the room temperature is less than 20 degrees (68 Fahrenheit), so I had to use all the heat generating appliances I own to heat the room to 20 when I was working with it. Plus, it didn't cure in 10 hours... It took 2 days to cure per coat (there are 4 coats on there!).
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Thanx for the kind words kid.
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