how much filtration is required for 1 aro & 2 BD stingrays

giar

Polypterus
MFK Member
Dec 20, 2016
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You gave the tap water parameters. What are the tank water parameters? If you have 40 ppm nitrates from the tap, you might consider RO (reverse osmosis) water.
right now
ammonia 0
nitrite 0
nitrate about 60 based on api test

the aro is the only thing in the tank
the 2 stingrays im plnning to buy it soon
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