I started using your 30 gal and 50 gal Flex Tanks with the skins and Oak adjuncts in 2012. I’m an amateur grape grower and wine maker who only uses his own grapes to make his wine. Rarely do I have enough volume to fill any tank so the skins have proven very successful. The 2013 wines seemed rather good so I entered them in the USA wide amateur competition “Bottle Shock Open” and won four medals. A bronze for a Tempranillo/Merlot blend. Two silvers, one for a Tempranillo and one for a Merlot, Tempranillo & Cab Franc blend. A final double gold medal was awarded for a Merlot/Tempranillo blend that I call “Dads Blend”. The double gold “Dads Blend” was also given 98 points. I’m very pleased with the control and results I have had with the Flex Tanks.