How can I contact the people behind this screen?

That's simple. Click on the Contact Us button in the main menu. Or, use the Customer Service link in each page's footer. Or, dial 1-719-637-7736. Or, e-mail us at support@watercrystals.com .

What's this "Na" and "K" business?

"Na" stands for sodium on the elemental chart. "K" stands for potassium.

Which type polymer should I use?

Both the sodium and potassium cross-linked polymers are quality products.

The potassium is the finest made in the industry.

Our customers tell us that the sodium cross-linked polymer lasts longer and is less susceptible to bacterial infection than are the potassium-based products that they have used. To the naked eye, the mid gradation potassium and the sodium polymer are indistinguishable. However, to the touch, the potassium has a softer membrane when hydrated.

The sodium cross-linked polymer has been field tested in agricultural applications for 12 years. The potassium has a life span of 5-7 years.

There is such a small amount of sodium and potassium in each type of crystal that the elements have virtually no effect on plants.

What size polymer should I buy?

The sodium cross-linked polymer comes in one size, unless you want to order a ton. Its granules are 0.85-2.5 mm when new and dry. They will hydrate to maximum sizes of 1/2-3/4 inch.

The potassium cross-linked copolymer comes in three sizes:  

o  A granular powder, <1mm;
o  A mid gradation, 0.85-2.0mm; and,
o  A large gradation, 1.7-4.0mm.

When fully hydrated, the granular powder is like a clear slurry; the mid gradation swells to 1/2 inch; and the large gradation, up to 1-1/2 inches.

The mid gradations are best for most horticulural, gardening and new turf applications. This is the preferred size for neck coolers, cool ties and cool pads, and for most craft uses.

The granular powder is best in potting mixes, sandy and porous soil, and for dust abatement applications. It is also successfully applied to existing turf after aeration.

The large gradation has its best application in clay soils, where it actually breaks down the clay and keeps it in a more porous state. It is popular also for home crafts and decorations.

The finer the particle size, the faster the rates of absorption.

A hydrated crystal exposed to direct sunlight will decompose.