I have used Ultimate water conditioner from Aquarium Co-Op for many years. It has worked well for me. I have several aquariums and I use it at every water change. My fish are healthy and happy. I trust Aquarium Co-Op products and their very helpful staff.

Another outstanding product I regularly purchase from the CO-OP. Never had any issues with this de-chlorinator.

I noticed my fish were flashing ( just before I spotted ick) I added this to my water change just before starting protocol for ick. Nice consistency. I prefer this to the API which I was using because I saw the fish reduced flashing right away. Hopefully reducing stress.

I have very harsh polluted water where I live and most people really struggle to keep fish alive. I completely attribute my success in fish keeping to this product and aquarium salt. I am so glad I stumbled across this product thanks to Cory's YouTube videos! It saved my guppies and made it to where I can now keep a larger variety of fish including tetras and corydora.

I've tried a lot of different conditioners over the years and this is the one I've settled on. The main factor is it doesn't cause problems with my meds during quarantine.

It's working as it should !! Thank you for having this product in your store and you have great customer service !!!!!

Used this after I needed to medicate my tank and it helped get everything back to normal fast! Fish seem happy.

This stuff seems to work great in my South American cichlid tank! Great price too!

I have used this water conditioner for the last couple of years. I have always been happy with it.

Ultimate 16oz

Plants look much better

This is the best water conditioner I have used. My fish seem happier since we started using it. It has been helpful to use between water cleaning and water changes if they need to be postponed.

Easy to use. Has a slimy feeling, which I guess is for the slime coat. I would buy again.

I love using this stuff and so do my fish. They get so excited every time I do a water change and use it.

I use this primarily in conjunction with Ich-X when quarantining or treating sick fish. Works great and doesn’t seem to mess with the potency of meds.

Worked really well happy 🐟

Pretty impressed with this stuff. Used mainly Prime throughout my aquarium journey, wanted to give something else a try. So far seems to work wonderfully.

I've tried most of the conditioners out there. They all work. I like that this one because of the aloe that helps to boost the fish slime coats.

Easy to use, very effective chlorine/chloramine neutralizer. Won't cause harm if over dosed.

Ultimate water conditioner works great and reasonable price

I have been using this water conditioner for many years and have never had a problem with it. Just to let you know, I have municipal water with chlorine in it, but no ammonia(chloramine). Aquarium co-op shipped out my order right away, and I got it a few days later(I live on the other side of the country).

I've used multiple times. Will continue to use. 100% confidence!

I have used this and Prime. I have been very satisfied with this product.

Our 13 year old fish did well with the conditioner!

I'm so glad I found this stuff. I bought multiple water conditioners and I'm glad I tried this one first because it works so well. I've had no issues at all and I use it with every water change.

Works as described helps with slime coat too so thats a bonus

I have been confidentially using Ultimate for more than 5 years now, specifically at water changes - recommended by Cory and although available elsewhere, want to support ACO and have learned so much in my journey and Ultimate has been part of it

I highly recommend this product. It works great at conditioning the water and helping to keep ammonia levels down plus no odor.

Great product, I use it weekly with my water changes

Works good. I use it for my Goldfish tank, pre treated in jugs. No issues

So far so good