API ACCU-CLEAR Freshwater Aquarium Water Clarifier 37 ml Bottle

This stuff is amazing and its not overly expensive either.I set up a new tank with plant substrate, sand and gravel and as a result, the water was extremely murky and cloudy with sediment. I used filter floss and Accu-clear ad within 3 hours my tank water was crystal clear.As I haven't got any fish in my tank yet I can't comment on how it affects them but hopefully it'll be ok and I'll be able to comment on that later.

Can’t have a gleaming aquarium without this stuff, been using it for ever & it doesn’t seem to affect the health or fish or plants. Works fairly quickly best added at night so nice and clear for the next day, what I will say though is that unless you’ve got adequate flow you’ll be gravel vacuuming quite a lot as what the filter doesn’t get will just fall to your substrate & decorations, apart from that highly recommended.

Works well

Cleared up my foggy fish tank in a matter of 90 minutes. I did add a very small dose. Then a little bit more an hour later. Both doses under the amount recommended. 30 minutes after the second dose the water was and still is crystal clear

before using this my fish tank was so cloudy it looked like someone had poured a carton of milk into my tank you could not see anything so i bought this and i put half a cap full into my tank a couple hours ago and already my water is crystal clear! i have never ever seen my fish tank water so clear it’s amazing stuff definitely worth the money. i wasn’t so keen on putting chemicals in my fish tank but my fish are still healthy and fine so i can say it’s safe to use and wk t kill your fish 10/10

With a bit of filter floss in the filter and a drop of this in mirky water after a big clean up it won’t be long before your aquarium is crystal clear again. Recommended.

Good product for the money

I used to use Tetra Crystal Water, but thought I'd try this API stuff, First time I bought it (not from amazon), it did what it said, lovely clear water. But this last purchase from here and as soon as it touches my Aquarium water it turns very cloudy and slowly clears up over 3-4 days?????, It never did this with the last batch I bought nor the Tetra stuff.Fish are fine and water test is spot on so............ god knows why this bottle is doing it.I should add that it does this in both my tanks. I also measured it out for both tanks (120ltr & 60ltr)