Check the listing for details. Microbe-Lift pH Decrease 1 Gallon, Ecological Labs. Condition: New. Listed at 49.95 USD. Microbe-Lift pH Decrease 1 Gallon, Ecological Labs Safely Lowers pH Levels Formulated in de ionized water Includes 2 pH decreasers for gentle effectiveness and 3 electrolytes to help maintain osmotic balance Contains a slime coat ingredient for skin protection and stress reduction in pond fish Has a chelating agent to enhance water quality Not harmful to fish or plants Application: Test your pond water at the same time each day (dawn = lowest pH; dusk = highest pH) for a pH reading. If the pH is above 8.0, use Microbe-Lift pH Decrease. If your pond contains fish and/or plants, do not dramatically change the pH (more than .5 of a pH unit) in 24 hours, as this may shock the aquatic life and plants. Add one ounce per 600 gallons of pond water for every 0.1 pH unit of decrease desired. Apply Microbe-Lift pH Decrease Plus in several steps and measure decreased pH before next addition. Repeat if/as necessary. Webb's eBay Store Store Home Store Policies Feedback Shipping Most orders are shipped from our warehouse in Maryland. We warehouse over 95% of the items that we offer, which is a key to our quick order turn-around. Some orders are drop shipped directly from our manufacturer's in various states within the continental US. All orders are shipped via either UPS or FedEx therefore we cannot deliver to PO boxes, please supply a physical address to which we can ship your order. Payment We accept PayPal and the following credit cards: Visa, MasterCard, American Express, and Discover. Please feel free to contact us with any questions.