they may be oxidized, but I would try to rejuvenate the wines. first dump all of the chemical and yeast. go ahead with one of the reds and add the water to get to 23l. do a taste test if not un pleasant proceed as follows. for each liter of wine measure .5 grams of powdered milk and dissolve in 5 ml of water. for 23 litters that would be about 12 grams of milk in 115ml of water. stir the wine vigorously so that there is a deep whirlpool, pour the milk solution so that it is below the surface of the wine. it should develop brown curds. let it settle for 2-3 days rack and proceed with fermentation. if taste is too neutral add a fruit concentrate to up the flavor before fermenting. once fermentation is complete rack and make sure wine become clear after about two months,then filter down with 1 micron filter. if you have good luck with the beginning on one proceed with others.