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Old 02-02-2017, 06:50 PM   #1 (permalink)
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Default Calcium deficiency?

Hi,
Pretty new to the planted tank hobby. Anyway 46 bow with Ray2 and marineland aquatic plant led that is mostly used for blue lighting. Eco complete and sand substrate, pressurized co2 at 30 ppm. Using EI index with ferts from GLA. Tap water parameters are KH 20, PH 8.2, GH 5. My ph drops to about 7.3 with co2 measured with Milwaukee ph meter. My plants seem to be growing, but get greenish brown algae on glass and plant leaves. Also noticed some leaves started to curl downward. Is this calcium air magnisium deficiency? Any ideas about he algae?
Thanks!!
Beerman
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Old 02-02-2017, 07:34 PM   #2 (permalink)
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Default Re: Calcium deficiency?

Side question,
I just purchased about 20 pounds of seiryu stone to add. With my already high KH ~ 20. Should I return for a different stone. I was just reading that it can have affects on Hardness of water.
Thanks!
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Old 05-31-2018, 11:05 PM   #3 (permalink)
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Default Re: Calcium deficiency?

Quote:
Originally Posted by Beerman View Post
Hi,
Pretty new to the planted tank hobby. Anyway 46 bow with Ray2 and marineland aquatic plant led that is mostly used for blue lighting. Eco complete and sand substrate, pressurized co2 at 30 ppm. Using EI index with ferts from GLA. Tap water parameters are KH 20, PH 8.2, GH 5. My ph drops to about 7.3 with co2 measured with Milwaukee ph meter. My plants seem to be growing, but get greenish brown algae on glass and plant leaves. Also noticed some leaves started to curl downward. Is this calcium air magnisium deficiency? Any ideas about he algae?
Thanks!!
Beerman
The plants show phosphor deficiency mostly, but there is an other big problem, you have very salty, alkalic water, the highher KH than GH shows it.
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Old 05-31-2018, 11:44 PM   #4 (permalink)
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Default Re: Calcium deficiency?

Quote:
Originally Posted by Beerman View Post
Side question,
I just purchased about 20 pounds of seiryu stone to add. With my already high KH ~ 20. Should I return for a different stone. I was just reading that it can have affects on Hardness of water.
Thanks!
With this tapwater you should use only RO water, and let the seiryu stone harder you water. If still have some problem, like not the best Ca:Mg ratio, you can add MGSO4 or CaCL2 to the water.

The higher KH means you have other carbonates in water than Ca or Mg, mostly NaHCO3 and NaCO3 what is very harmful to the plants, the Na ion excess can prevent Ca,Mg, K uptake partly or fully, and the extra HCO3(what you measure with KH) higher the pH, too.
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