Does this remove water conditioner like Prime after a water change? Isn't that needed?

It is to be assumed that you take down your tank, no more than 20% each week when you do your water change. Prime works with your biofilter. I gauge mine by adding 1 drip per gallon of NEW water. If I take out 10 gallons, I pump in 10 gallons, then immediately put the Prime directly into the tank. Some people use other methods of replacing the water in which case you are able to add the Prime directly to the NEW water prior to pouring it into your tank. Either way it will work. FYI - if you don't already use salt, you may want to think about putting a table spoonful of aquarium salt (1 tblsp to every 5 gallons of NEW water) 10 gallons = 2 tablespoons.) into your tank to prevent your fish from stressing. Hope this was helpful.

ASIN	B0002AQKKC
Allergen Information	Nut Free
Best Sellers Rank	#12,245 in Pet Supplies ( See Top 100 in Pet Supplies ) #206 in Fish Medication & Health Supplies
Brand	Fluval
Brand Name	Fluval
Customer Reviews	4.7 out of 5 stars 5,746 Reviews
Global Trade Identification Number	00015561114905
Included Components	All Items in Description
Item Form	packs
Item Type Name	Zeo Carb, 3 x 150g
Item Weight	1.1 Pounds
Item form	packs
Item weight	1.1 Pounds
Liquid Volume	450 Milliliters
Liquid volume	450 Milliliters
Manufacturer	Hagen
Target Species	Fish and Plants" or "Freshwater Pond
UPC	015561114905
Unit Count	3 Count

Fluval Zeo Carb 450g

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