Re: How many wc per week/2weeks?
It all depends on your tank size and bioload as well as ur filter capacity. Arowanas can be pretty big shit producers so you will definitely need a sump to handle that amount of waste. How big is your tank? If it is a 6-8ft with only 1 arowana then 30-40% once in 2 weeks should be Ok, assuming that your sump is coping well. If it is smaller then 30% a week is good. I personally do not have any experience when it comes to arowanas so you might have to take my suggestions with a pinch of salt. Anyways, do what is most logical and more water changes is always better than less, and be sure to treat your water before adding it. Good luck!
Cheers,
Happydanio
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Does this make sense: ~Imperfect Past equals future tense~
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