madlan
Member
Hi all,
What would your opinion be regarding keeping soft water fish (e.g large shoal of Cardinals) in an EI fertilised aquarium with hard water? I’m worried about large water changes changing any adjusted water parameters?
I have a 50gpd RO unit but 50% water changes once a week make it impractical to use, I was hoping to use just straight tap water. What about adding peat or other chemicals to the filter? I guess each week the 50% water change is going to raise the hardness for several days until the peat etc softens the water again, not ideal!
My tap water is:
pH 7.2
GH 340 mg/L (ppm)
KH 260 mg/L (ppm)
What would your opinion be regarding keeping soft water fish (e.g large shoal of Cardinals) in an EI fertilised aquarium with hard water? I’m worried about large water changes changing any adjusted water parameters?
I have a 50gpd RO unit but 50% water changes once a week make it impractical to use, I was hoping to use just straight tap water. What about adding peat or other chemicals to the filter? I guess each week the 50% water change is going to raise the hardness for several days until the peat etc softens the water again, not ideal!
My tap water is:
pH 7.2
GH 340 mg/L (ppm)
KH 260 mg/L (ppm)