7-8 months on a heavily planted 210 with fx5 and mag 350 .no fish loss and water was always crystal clear/ clean
WHATS THE LONGEST YOUVE WENT W/O WC?!
- Thread starter F1 VET
- Start date
Longest I would say is about 5 months Nov-April for a 55 gal, with different catfish. Also has a aquaclear 110 filter.
I had a 20 gallon with a school of zebra danios, some small catfish, and tetras and a few snails that I didn't do a water change on for 2 years. But I tested the water every 2 or so weeks and never had ammonia spikes, nitrate issues or anything. I did run a HOB filter that gave me a 8x turnover rate though and the amount of water I lost through evaporation every summer probably added up to the tank volume a bunch of times. So idk if the water I added to top it off counts. I only lost 5 fish the whole time and they where eaten by the catfish though.
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