We put one on my friends heavily stocked 500 gal tank. He could never get his nitrates below 60ppm even after doing 200 gallon water changes every 2 weeks. After 6 mos his nitrates are zero and tank is healthier then ever.
As for using racing fuel, I'm sure it works but I'll stick to paying a few extra bucks for Nitragone. Additionally I feel some loyalty to this company for bringing such an amazing product to market that has made this hobby so much easier and enjoyable for me.
Paul suggested taking to you, maybe taking a look at your system, I just picked up a 600+ gallon tank and he thinks I could benefit from it.
Tim
Darren i would like to maybe invest in the system. Do you still have a contact with the owner? I emailed him and neevr got a email back.
Thanks Darren we set up my reactor on Monday, looking forward to no more water changes.