Although I joined the ukaps forum 6 years ago, I never really posted on this forum.... But now I really hope to get some great input from you!
I have a couple of problems that I can not solve, despite 6 months trying...
This is the tank:
The main problem is that the new leaves of the javafern don't grow well. During or even before the unfolding, you see holes forming, apical side is most affected. below a couple of pictures. the bolbitis is also slightly affected, but less for sure.
adult leave, a typical leave.... the damage was caused during the development of the leave, not after the leave was formed
typical new growth. these leaves are just a couple of days old....
possibly related to this (or not) are to other problems that I experience: green translucent water and green spot algae.
the water in my bath tub:
What I do know: I feed my plants EI style:
-50% waterchange per week. new water is 100% RO with sera mineral salt and some extra Mg, Ca K salts
-due to the green spot algae I have been increasing during the last 6 months my PO4 dose. from 4 ppm per week to 2x 10 ppm per week. the PO4 level in the tank is 20 ppm --> no effect
-I add 0.15 ppm iron per day (0.05 ppm Fe_EDTA, 0.05 ppm Fe_DTPA, 0.05 ppm Fe_gluconate)
-other micro's are added according to EI
-NO3: 10 ppm per week. NO3 in the tank is around 15-20 ppm.
-light: at the surface I had 50-60 umol and 30 at the bottom. 3 weeks ago I lowered the lights to have 30 umol at the surface and 15 umol at the bottom. so far: no effect
-CO2: I have a oxyguard CO2 meter and it measures 30 ppm. it is freshly calibrated, so likely more or less accurate. pH drop is also 0.9 points to 6.6 during the light cycle
the green water is not caused by algae (uv-c did not work, and I don't see algae under the microscope) but activated carbon or purigen also does not help. So I was thinking it could perhaps be caused by the melting leaves, releasing chlorophyll to the water.
there is more info that I can give, but I think this is most relevant part..
Do you have any idea what is causing this?
thanks!
yme
I have a couple of problems that I can not solve, despite 6 months trying...
This is the tank:
The main problem is that the new leaves of the javafern don't grow well. During or even before the unfolding, you see holes forming, apical side is most affected. below a couple of pictures. the bolbitis is also slightly affected, but less for sure.
adult leave, a typical leave.... the damage was caused during the development of the leave, not after the leave was formed
typical new growth. these leaves are just a couple of days old....
possibly related to this (or not) are to other problems that I experience: green translucent water and green spot algae.
the water in my bath tub:
What I do know: I feed my plants EI style:
-50% waterchange per week. new water is 100% RO with sera mineral salt and some extra Mg, Ca K salts
-due to the green spot algae I have been increasing during the last 6 months my PO4 dose. from 4 ppm per week to 2x 10 ppm per week. the PO4 level in the tank is 20 ppm --> no effect
-I add 0.15 ppm iron per day (0.05 ppm Fe_EDTA, 0.05 ppm Fe_DTPA, 0.05 ppm Fe_gluconate)
-other micro's are added according to EI
-NO3: 10 ppm per week. NO3 in the tank is around 15-20 ppm.
-light: at the surface I had 50-60 umol and 30 at the bottom. 3 weeks ago I lowered the lights to have 30 umol at the surface and 15 umol at the bottom. so far: no effect
-CO2: I have a oxyguard CO2 meter and it measures 30 ppm. it is freshly calibrated, so likely more or less accurate. pH drop is also 0.9 points to 6.6 during the light cycle
the green water is not caused by algae (uv-c did not work, and I don't see algae under the microscope) but activated carbon or purigen also does not help. So I was thinking it could perhaps be caused by the melting leaves, releasing chlorophyll to the water.
there is more info that I can give, but I think this is most relevant part..
Do you have any idea what is causing this?
thanks!
yme
