My shallow build
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Sherman
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Just measure the PO4.
Was 200 display by Hanna on Sunday. That is around 0.6 ppm
Now Hanna display 106. That is 0.32 ppm
A drop of 100 after adding phos minus and carbon in bags 3 days ago
Was 200 display by Hanna on Sunday. That is around 0.6 ppm
Now Hanna display 106. That is 0.32 ppm
A drop of 100 after adding phos minus and carbon in bags 3 days ago
OP
OP
Sherman
Well-Known Member
I not sure what is this brown sheet on my rocks.Today morning wake up and saw this
Is it diatom? If is diatom then is silica induce. Will disappear once silica drop below 0.1 ppm
Or is this cyano? I never see brown cynao before. And is not slimme.
If its cynao that is bad bacteria. Cynao feed on nitrogen and carbon and use photosynthetic period to produce oxygen.
Will reduce photosynthetic period by 50% and siphon out what can be seem. Will also reduce the nutrient level by reducing the PO4 from 0.3 to 0.1
Hope above steps work.
OP
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Sherman
Well-Known Member
Tonite carry out PO4 and NO3 mesurement.
PO4 finally drop from 106 ppb to 87 ppb or 0.27 ppm.
Now no more brown film on the rock. However did see some very short brown
hair.(About 1 cm)
Is this hair algae?
PO4 finally drop from 106 ppb to 87 ppb or 0.27 ppm.
Now no more brown film on the rock. However did see some very short brown
hair.(About 1 cm)
Is this hair algae?
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