Jiffy Pro7 70/30 Coco Mix 50 LitresJiffy Pro7 High Quality Coco Perlite Blend Jiffy Pro7 70 30 contains a blend of high quality coco and perlite. Adding in 30% perlite makes the coco lighter and fluffier, giving it even better drainage and oxygenation levels. How Jiffy Pro7 70 30 Works The extra perlite in 70 30 allows nutrients to flow through the medium more freely. As a result, 70 30 will need watering more often than regular coco, but the pay off for this is faster growth rates and