Juvenile Dovii

Stephen St.Clair

Potamotrygon
MFK Member
Jul 2, 2017
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Since the Dovii is still a small juvenile & the only fish in a 160 gal. tank really no need for a weekly 50% water change.
IMO, a 25% - 30% weekly water change should be fine. Of course as the Dovii matures water changes will need to be adjusted upward.
 
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razE

Feeder Fish
MFK Member
May 6, 2023
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Since the Dovii is still a small juvenile & the only fish in a 160 gal. tank really no need for a weekly 50% water change.
IMO, a 25% - 30% weekly water change should be fine. Of course as the Dovii matures water changes will need to be adjusted upward.
Thank you. What size and frequency would I be looking at for a mature Dovii?
 

Jexnell

Bronze Tier VIP
MFK Member
Jul 17, 2017
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There is no set time /amount for water changes. There are too many variables for each and every tank to give a generic times/amounts of when yo do water changes. Size and number of fish, gallons of water, amount feed, amount of filtration, etc...
Right after your next water change do a Nitrate test. This gives you a starting point. The following water change do a pre water change test. This will give you the amount of nitrates your tank makes in that amout of time. Now it's up to you to decide what amount of nitrates are you comfortable with. Most stick to 20ppm or less. If you do a 50% water change or more you remove 50% of the nitrates.

In my 125gal tank, with a single 12in Amphilophus I did 75% water changes every three days. That kept the Nitrates to 5ppm or below.
 
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