ParaGuard is the only fish and filter safe aldehyde based (10% by weight) parasite control product available. Unlike highly toxic and difficult to use formalin based medications, ParaGuard contains no formaldehyde or methanol and will not alter pH. ParaGuard employs a proprietary, synergistic blend...

ParaGuard is the only fish and filter safe aldehyde based (10% by weight) parasite control product available. Unlike highly toxic and difficult to use formalin based medications, ParaGuard contains no formaldehyde or methanol and will not alter pH. ParaGuard employs a proprietary, synergistic blend...

Zahler's Paraguard is an advanced intestinal flora support. Some signs of imbalance and reduced vitality and imbalance are diarrhea or constipation, gas, bloating nausea and fatigue. Zahler's Paraguard contains a unique blend of powerful herbs including wormwood, pumpkin seed, garlic bulb and more....