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Originally Posted by Neen
There is one product out there that says if you put it in your tank you won't have to change your water for 6 months!! Yuck, poor fish.
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Are you talking about 'Nitrasafe' by any chance?
If your LFS told that you don't need to change your water for 6 months using it, then they're either misinformed or lying!
I actually use this stuff because, unfortunately, my tank is overstocked (all my fish were rescued from a tank 5 times the size of mine which burst!), and my nitrates are all over the place.
All this stuff actually does is absorb the nitrates from the water, and I have to say it works very, very well!
You put the sachet inside your filter and it gets the nitrate levels down to almost zero within a coupla hours.
1 sachet will get a 60 gallon tank with a nitrate level of 50mg/lt down to a safe level overnight...
Also, you can 'recharge' the sachet by running it through with salt water then rinsing it out.
Anyway, I sound like a commercial, so I may as well link to where you can buy it from!
http://www.petcompany.co.uk/acatalog...ments_131.html - it's the 3rd product from the bottom of the page