You might want to try this solution.

http://boards.cannabis.com/grow-faqs...utraliser.html

It might work, if you are really considering it but can't find the polymer crystals here's a link I'm getting mine from.

Water Polymer Crystals, Water Crystals and Polymer Crystals for the crafts, floral, home decoration, smelly jelly, air freshener, agricultural, landscaping, etc. industries.