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expiredweekendwarrior8 posted Nov 30, 2021 02:26 PM
expiredweekendwarrior8 posted Nov 30, 2021 02:26 PM

32oz API Tap Water Conditioner for Aquariums

w/ Subscribe & Save

$5.90

$6.99

15% off
Amazon
31 Comments 10,391 Views
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Deal Details
Amazon has 32oz API Tap Water Conditioner for Aquariums for $5.92 when you check out via Subscribe & Save. Shipping is free with Prime or on orders $25+.

Note, in stock soon.

Thanks to community member weekendwarrior8 for finding this deal.

About this item:
  • Contains one (1) API TAP WATER CONDITIONER Aquarium Water Conditioner 32-Ounce Bottle
  • Neutralizes chlorine, chloramines and other chemicals to make tap water safe for fish
  • Prevents tap water chemicals from causing gill destruction, tissue irritation and fish death
  • Super strength, high concentration formula
  • Use when adding or changing water and when adding new fish to freshwater and saltwater aquariums

Editor's Notes

Written by SubZero5 | Staff
  • About this deal:
  • About this store:
    • Amazon offers free returns for this item. You can return the item for any reason in new and unused condition: no shipping charges.
    • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
    • If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by weekendwarrior8
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has 32oz API Tap Water Conditioner for Aquariums for $5.92 when you check out via Subscribe & Save. Shipping is free with Prime or on orders $25+.

Note, in stock soon.

Thanks to community member weekendwarrior8 for finding this deal.

About this item:
  • Contains one (1) API TAP WATER CONDITIONER Aquarium Water Conditioner 32-Ounce Bottle
  • Neutralizes chlorine, chloramines and other chemicals to make tap water safe for fish
  • Prevents tap water chemicals from causing gill destruction, tissue irritation and fish death
  • Super strength, high concentration formula
  • Use when adding or changing water and when adding new fish to freshwater and saltwater aquariums

Editor's Notes

Written by SubZero5 | Staff
  • About this deal:
  • About this store:
    • Amazon offers free returns for this item. You can return the item for any reason in new and unused condition: no shipping charges.
    • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
    • If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by weekendwarrior8

Community Voting

Deal Score
+42
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Model: API TAP WATER CONDITIONER Aquarium Water Conditioner, 32-Ounce

Current Prices

Sort: Lowest to Highest | Last Updated 9/15/2025, 10:30 AM
Sold By Sale Price
Amazon$20.48

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Top Comments

ilya0002
1273 Posts
471 Reputation
Mind that Prime dosage is only 1ml per 10 gal (not 5ml per 10 gal, like api stress coat).
A 32oz bottle (~950ml) of API Stress coat would treat 1900 gal of water. So the "cost to treat" with API Stress Coat is $3.27 per 1000 gal (not accounting for S&S savings)
A 250ml of prime will treat 2500 gal of water, so the cost to treat is $3.67 per 1000 gal, so they are almost the same in terms of long-term treatment costs.

What is probably more important for me is that, from what I read on various forums, API Stress Coat don't go well with some Seachem filtration/purification products, notably Purigen. I don't know if that is true, but I wouldn't risk switching for this reason alone, given the price is almost the same.

Anyway, always rep+ for aquarium deals!

30 Comments

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Nov 30, 2021 06:22 PM
65 Posts
Joined Nov 2011
lordkevNov 30, 2021 06:22 PM
65 Posts
Normally use Prime, but at this price I'll def go for it.
Nov 30, 2021 06:42 PM
1,273 Posts
Joined Nov 2014
ilya0002Nov 30, 2021 06:42 PM
1,273 Posts
Quote from lordkev :
Normally use Prime, but at this price I'll def go for it.
Mind that Prime dosage is only 1ml per 10 gal (not 5ml per 10 gal, like api stress coat).
A 32oz bottle (~950ml) of API Stress coat would treat 1900 gal of water. So the "cost to treat" with API Stress Coat is $3.27 per 1000 gal (not accounting for S&S savings)
A 250ml of prime will treat 2500 gal of water, so the cost to treat is $3.67 per 1000 gal, so they are almost the same in terms of long-term treatment costs.

What is probably more important for me is that, from what I read on various forums, API Stress Coat don't go well with some Seachem filtration/purification products, notably Purigen. I don't know if that is true, but I wouldn't risk switching for this reason alone, given the price is almost the same.

Anyway, always rep+ for aquarium deals!
Nov 30, 2021 07:55 PM
93 Posts
Joined Nov 2010
blobberNov 30, 2021 07:55 PM
93 Posts
Trying to place the order to the same address that I always use, but it's giving me the following error:

"Sorry, this item can't be shipped to your selected address. Learn more. You may either change the shipping address or delete the item from your order."

I re-entered the address into my account but it didn't make a difference. I've shipped this same product to the same address in the past without issues.

Is anyone else having this problem or know why it could be happening? The standard reasons at the link they provided aren't it (the package is not too big, etc...).
Nov 30, 2021 08:05 PM
1,938 Posts
Joined Dec 2004
awdawgNov 30, 2021 08:05 PM
1,938 Posts
Quote from ilya0002 :
Mind that Prime dosage is only 1ml per 10 gal (not 5ml per 10 gal, like api stress coat).
A 32oz bottle (~950ml) of API Stress coat would treat 1900 gal of water. So the "cost to treat" with API Stress Coat is $3.27 per 1000 gal (not accounting for S&S savings)
A 250ml of prime will treat 2500 gal of water, so the cost to treat is $3.67 per 1000 gal, so they are almost the same in terms of long-term treatment costs.

What is probably more important for me is that, from what I read on various forums, API Stress Coat don't go well with some Seachem filtration/purification products, notably Purigen. I don't know if that is true, but I wouldn't risk switching for this reason alone, given the price is almost the same.

Anyway, always rep+ for aquarium deals!
If strictly removing chlorine and aiming for the lowest cost, Sodium Thiosulfate is considerably less per 1,000 gallons.
https://kensfish.com/products/sod...2998106169
The $3.25 package there will treat 37,850 gallons. That said, safe/prime can also treat for chloramines, heavy metals etc.
Nov 30, 2021 08:08 PM
127 Posts
Joined Dec 2012
Dave6476467onlyNov 30, 2021 08:08 PM
127 Posts
Quote from blobber :
Trying to place the order to the same address that I always use, but it's giving me the following error:

"Sorry, this item can't be shipped to your selected address. Learn more. You may either change the shipping address or delete the item from your order."

I re-entered the address into my account but it didn't make a difference. I've shipped this same product to the same address in the past without issues.

Is anyone else having this problem or know why it could be happening? The standard reasons at the link they provided aren't it (the package is not too big, etc...).
Probably not in stock at nearby Amazon warehouse
Nov 30, 2021 08:16 PM
93 Posts
Joined Nov 2010
blobberNov 30, 2021 08:16 PM
93 Posts
Quote from Dave6476467only :
Probably not in stock at nearby Amazon warehouse
Thanks. You're probably right.

Good deal for anyone with an aquarium or pond if they can get it anyway.
Nov 30, 2021 09:42 PM
44 Posts
Joined Apr 2017
Tools1776Nov 30, 2021 09:42 PM
44 Posts
Quote from ilya0002 :
Mind that Prime dosage is only 1ml per 10 gal (not 5ml per 10 gal, like api stress coat).
A 32oz bottle (~950ml) of API Stress coat would treat 1900 gal of water. So the "cost to treat" with API Stress Coat is $3.27 per 1000 gal (not accounting for S&S savings)
A 250ml of prime will treat 2500 gal of water, so the cost to treat is $3.67 per 1000 gal, so they are almost the same in terms of long-term treatment costs.

What is probably more important for me is that, from what I read on various forums, API Stress Coat don't go well with some Seachem filtration/purification products, notably Purigen. I don't know if that is true, but I wouldn't risk switching for this reason alone, given the price is almost the same.

Anyway, always rep+ for aquarium deals!
I'm loving the aquarium deals as well. Just started my first tank this week.

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Dec 01, 2021 12:17 AM
1,077 Posts
Joined Jan 2012
skoal2007Dec 01, 2021 12:17 AM
1,077 Posts
Need this if using the well water?
Dec 01, 2021 12:27 AM
111 Posts
Joined Aug 2009
WhoSentUDec 01, 2021 12:27 AM
111 Posts
Quote from skoal2007 :
Need this if using the well water?
Yes. Well water can contain chlorine and other contaminates, just like tap.
1
Dec 01, 2021 12:40 AM
1,077 Posts
Joined Jan 2012
skoal2007Dec 01, 2021 12:40 AM
1,077 Posts
Quote from WhoSentU :
Yes. Well water can contain chlorine and other contaminates, just like tap.

Thank you
Dec 01, 2021 12:40 AM
38 Posts
Joined Jul 2012
sergomelDec 01, 2021 12:40 AM
38 Posts
Quote from WhoSentU :
Yes. Well water can contain chlorine and other contaminates, just like tap.
Chlorine in well water? That's something new. I quit using water primes long time ago. My fish doing well after changing one quart of my tank with tap water without any chemicals. Although I don't have any fancy fish.
Dec 01, 2021 12:42 AM
258 Posts
Joined Sep 2015
lannister80Dec 01, 2021 12:42 AM
258 Posts
Just FYI, do NOT use more than the recommended amount, especially if you have invertebrates that need calcium. Using too much will bind to all the calcium in the water and your snails will start getting holes in their shells.
Dec 01, 2021 01:21 AM
98 Posts
Joined Dec 2010
nejDec 01, 2021 01:21 AM
98 Posts
Just grabbed the 5 gallon for 96, never seen it for that cheap. Thanks!
Dec 01, 2021 01:51 AM
1,077 Posts
Joined Jan 2012
skoal2007Dec 01, 2021 01:51 AM
1,077 Posts
Quote from nej :
Just grabbed the 5 gallon for 96, never seen it for that cheap. Thanks!

What is the regular price?

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Dec 01, 2021 02:52 AM
109 Posts
Joined Nov 2010
slickcouponsmanDec 01, 2021 02:52 AM
109 Posts
Quote from lannister80 :
Just FYI, do NOT use more than the recommended amount, especially if you have invertebrates that need calcium. Using too much will bind to all the calcium in the water and your snails will start getting holes in their shells.
I've never heard of that being a problem before. Is that the Sodium Thiosulfate action that binds calcium? And would the bound calcium show up in GH tests? Like if you test a GH measurement before and after over dosing the water conditioner, do you get different readings? Or is that very reliant on the type of GH test kit?

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