What's more effective. Frequent smaller water changes or single huge ones?

RD.

Crazy Canuck
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May 9, 2007
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This is exactly why I always stress that one size does not fit all in this hobby, especially when water changes are considered. I know my water parameters intimately, as I do my fish, so massive water changes, even in the 90% range are never an issue. Having said that, I would never suggest that is something that the next hobbyist should be doing.
 
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Lepisosteus

Potamotrygon
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May 20, 2014
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Algae consumes nitrates as well as an array of other nutrients. As algae starts to grow nitrates/nutrients will decrease unless you increase input. You can have a low nutrient system on a test kit and still have lots of algae in your tank because all the nutrients are being used by the algae. It’s all a balancing act. If you want no algae, remove all algae from glass, rock, etc and maintain low nutrient levels following the removal.
 
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