Actually Terry, the addition of a flocculating agent to clay has the effect of keeping the particle size too large to form clay. Clay forms when many very small particles and just the right amount of water combine. By adding a flocculating agent, the particles are surrounded by the flocculant, and grow too large to form a suspension. The same principle can work in ponds which are murky due to high clay contents. The addition of gypsum (not lime in this case as it would raise the pH too much) will cause the clay to "fall out of suspension" to the bottom of the pond, and the water will clarify. I know that I am over-simplifying this complex topic, but suffice it to say that the flocculant such as gypsum or lime makes the individual particles in your soil larger, too large to form a suspension like clay, and improves the ability of water to pass through the soil. I hope this helps/w3tcompact/icons/smile.gif