Seachem Prime is the best water conditioner you can buy in my opinion. This purchase came with a pump which is great for large volumes of water but not suitable for nano aquariums. Here's a tip: Ask the pharmacy for a bottle of liquid medicine with a syringe cap and a syringe and draw up the required amount easily and accurately for small containers. I've never had a problem with any of the installed tanks I use Prime in and have kept at least 6 tanks ranging from 270 gallons to 5 gallons and a 300 gallon pond for about 6 years using well and tap water. Have fun fishing!
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