Thanks for PMing me...I'll be glad to post the stuff:
So, according to Toni Weschler in _Taking Charge of Your Fertility_ there are a number of things to try for low sperm count and agglutination (clumping).
1,000 mg a day of vitamin C (a tablet also containing calcium, magnesium, and manganese)
In a study group of 27 men diagnosed with agglutination, all twenty on the 1,000mg Vitamin C pill got their wives pregnant and all seven NOT on the pill were still unable to help conceive. Pretty amazing.
For low sperm count:
Mild deficiencies in zinc, Vit. A, Vit. B, and selenium can have an effect on sperm count. Most of the zinc and selenium in males' bodies is in the prostate and testicles, so these seem to be important to fertility in some way.
Arginine (a nonessential amino acid) supplements can help men with low sperm count. An oral dose of 4 grams of powdered arginine put into some warm water can really increase count and motility.
Anything you try will take at least 2 to 3 months to take full effect, since it takes that long for individual sperm to mature.
So I was a little mixed up on the supplement you needed for clumping, but hopefully this clears it all up!