Correct usage of hikari prazipro ?

[anewbie]

Does anyone know the correct instructions for using przipro ? I'm treating a fish in a 5 gallon pail with approx 2 1/2 gallons of water. I added 1/8 tsp. 

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Now my question is when do  i do a second dosage and when can i do a water change. Do i add a dosage every day or do i wait 3-5 days and then do a water change and add a second dosage if needed ?

[KBOzzie59]

From the directions at https://www.hikariusa.com/water_quality_folder/prazipro.html

Start treatment with as large a water change as practical or start with new water. Any water used should first be conditioned with Ultimate^® or a combination of Liquid Buffered ClorAm-X^® and Stress-X^™ to remove ammonia, chlorine and chloramines. Do not stop filtration, but remove activated carbon and stop foam-fractionation (protein skimming) and UV sterilization-failure to do so will render product ineffective. SHAKE VIGOROUSLY before use. Measure Liquid PraziPro^® at the rate of one (1) teaspoon (~5mL) per 20 (76L) gallons of water to be treated (one [1] fl. oz. [29.5 mL] per 120 gallons [454L]). Care should be taken to treat the exact amount of water in the system. This means deductions for substrate, rock or coral and any other internal equipment is necessary. You can calculate the amount of water in your aquarium by taking a measurement of the length x width x depth of the area with water and dividing by 231 for approximate volume. This produces a concentration of 2.5 mg/L. Distribute the proper amount around the edge of the pond or aquarium or directly in to the filter box to achieve the best overall distribution. A single treatment lasting 5-7 days may be sufficient. Retreat as necessary, but no more than once every 3 days. May be used as a preventative, at the standard dosage, when disease is likely. Do not use with any other drugs or disease treatments. May cause noticeable temporary foaming. It's important to note that most parasites in the class that PraziPro^® would be used for have up to a 28 day life cycle. This means for major issues, up to four (4), uninterrupted treatments may be required to resolve the issue. Over dosing will not speed impact.

DO NOT OVERDOSE - this means you should calculate the actual amount of water in your tank by multiplying the length x width x height and dividing by 238 to get the true gallons. Please also deduct the amount of space consumed by substrate (gravel, sand, etc.) rock, decorations or other things which are displacing water.

NOTE: We do not recommend using any sulfur or sulfinite-based water conditioners with this product. If your normal water conditioner does not list the ingredients please verify with the maker that it does not contain these ingredients. If you notice any rotten egg smell to the product, it likely does have these ingredients and should be avoided as it could cause the product to be less effective and the dissolved oxygen levels to be negatively impacted.

Use Liquid PraziPro^® any time unwanted parasites are noticed or introduction is probable.

Compatibilities: There are no known compatibility issues with the use of Liquid PraziPro^® except for use in marine (saltwater) systems where flatworms of the Polycladida order are being cultured and when used where feather duster worms (sabellidae) or delicate worm-type relatives are kept. For heavily stocked aquariums or marine aquariums with lots of coral, added aeration is suggested.