Do i need to do water changes if i have good filter

  • We are currently upgrading MFK. thanks! -neo
esoxlucius said:
I know you've been doing a lot of work and tinkering about with this very subject. How far do you realistically think you're away from running tanks that would never ever need water changes?
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Purigen in a moving bed combined with (literally) the whole tank volume in denitrifying media in a slow flow reactor ( separate to the main aerobic filter) got me to consistently zero nitrates in a 180 pleco tank... but that didn’t make up for the evaporation demineralisation. I still did (albeit small) WC’s weekly.
Eventually I just gave it up ... was easier to do the WC’s.
 
taksan said:
Purigen in a moving bed combined with (literally) the whole tank volume in denitrifying media in a slow flow reactor ( separate to the main aerobic filter) got me to consistently zero nitrates in a 180 pleco tank... but that didn’t make up for the evaporation demineralisation. I still did (albeit small) WC’s weekly.
Eventually I just gave it up ... was easier to do the WC’s.
Click to expand...
With the right equipment water changes are so easy, I don't think whole fancy systems are worth the money for reducing nitrates..
 
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I have to turn 6 valves, wait 30 minutes, then turn on one more valve, wait 7 minutes, turn off 2 valves, open one valve wait 7 minutes. Then close 3 valves, then open 4 valves. It's a lot simpler than it sounds.
 
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Yall lucky. I don't have enough tanks to validate an automatic water changer in my opinion. I'm stuck doing them with my python but hey, at least I'm not doing them by bucket.
 
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That's quite high, would you mind telling me how it got to that point?
 
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