How long does it take you to go through water conditioner?

[a123andpoof]

It seems like I am going through it kinda fast. Maybe not though. I use the stress coat from wally world. I hope to get a different brand next time. Anyways I have used it on two tanks a 2.5g and 3g and have only had it maybe two months. I use about 1/4 tsp and a couple drops when I do small water changes. About 4-5 drops for both of them. I do changes every other day. And 100% weekly. Should i be going through it that fast?
And how long does it take you to go through it, and whats a brand that will last longer?
Oh and I use about 6 drops for my 1g. Is that to much?

[ThePearlFish]

A little over isn't really that bad IMO. I used quite a bit too.

[Welsh]

Iv had mine about 2 months and I use it on two tanks, I have about 1/2 left of a 250ml bottle but I don't measure purely because I dont understand how to, I was never any good at maths lol

[Jayy]

I don't really know. With a bettas and my 35gal I guess a good amout.I need to go buy more anyway.

[Narnian]

Prime seems like it would last a loooong time. I bought a 3.4 oz bottle and it says 5 ml (there are 5 lines on the cap) treats 50 gallons, so I'm guessing 1 ml (only 1 line....which is about the size of a few drops) treats 10 gallons.

As far as how to divide that down for smaller tanks like yours, I have no idea, but it would probably last forever!!