Although Seachem Prime is mainly designed for tap water, it can also be used with well water. To find out how you can mix this solution with the water you get from the well, you can take a look this article from Aquarium Blueprints.
Do you need to use Seachem Prime with well water?
Before we begin, it is important to note that you may not need to mix Seachem Prime with well water at all in order to make it safe for your fish and other aquatic pets.
The main purpose of this product is to remove chlorine and chloramines for the waters of your fish tank or pond. Otherwise, these chemical compounds may end up killing off the beneficial bacteria colonies responsible for removing the toxic ammonia, nitrite and nitrate compounds. Not to mention that you fish may also be directly harm.
If your well water comes from a water treatment plant, then it will most likely contain chlorine and/or chloramines. If you want to know for sure, then you can test the water for these two compounds by using a product such as the Tetra EasyStrips 6-in-1 Aquarium Test Strips, which you can find on Amazon with this link.
Moreover, your well water could come with heavy metals that may be harmful to the species of fish you are keeping. Seachem Prime should temporarily bind these metals to be safe. With that said, we recommended using a different water source entirely if your well water contains any high concentrations of heavy metals that may make it unsafe for aquarium fish.
How to use Seachem Prime with well water
In order to properly mix Seachem Prime with well water, you can take the following steps:
1. To start off, prepare your tank or pond before you add water to it.
If you are setting up the tank or pond for the first time, then make sure you add the substrate, filter, décor and other objects.
If you are doing a water change, then remove the water from the tank or pond.
2. Next, you should add Seachem Prime directly to the tank or pond.
Make sure you dose based on the number of water volume your tank or pond is capable of holding.
Based on the official directions, you can add 5 millimeters of Seachem Prime for every 50 gallons (or 200 liters) of water. You can safely overdose this solution up to 5 times the aforementioned amount without any adverse effects.
3. After adding Prime to the fish tank or fish pond, you can then add the new water you get from the well.
4. Seachem Prime will immediately remove the chlorine and chloramines from the well water. You can also use this product to bind ammonia, nitrites and nitrates temporary for up to 48 hours.
You can re-dose Prime, without a water change, every 24 to 48 hours if you have issues with the aforementioned ammonia, nitrite and nitrate spikes.
To see if you can use Seachem Prime with Seachem Purigen, you can take a look at this link.