Hi guys,
From your experience is it possible, at some point, to have too much CO2 for plants?
I have GH=6, kh=4 and pH=5.7 so, theoretically i have 239.43ppm CO2. I know, i know... I shouldn't take into consideration that table, and I don't. But still...
I'm asking because despite the things looks fine on paper, plants are not happy. The CO2 seems to be enough (if I go lower than that red cherrys are obviously stressed... like... dead
) enough nutrients (30ppm NO3, 3ppm PO4, 50ml JBL micro solution which is twice the recomended dose per week... and so on), good water flow (one canister and 2 powerheads). The water volume is 100 liters or about 27 gallons. I'm adding Mg2+ (from MgSO4) and besides, JBL claims that them micro fert contains Mg as well.
The actual simptoms are: Pogostemon stellatus - melting, Pogostemon helferi - melting, Limnophila aromatica - grows very slow, all other plants are surviving but none of them are growing at the speed I know they can, and no one is pearling anymore.
So... I know the CO2 is not low. I know the flow is not insufficient. I know the nutrients are fine (full E.I.) + micros... I can't think of anything else
than maybe... something is too much.
From your experience, is this possible? Maybe too much CO2? Maybe too much water flow?
Any opinion or suggestion is welcome.
Many thanks.
Andrei.
Later edit: Sorry, I forgot to mention the light: that's 90W T8, Osram fluora, at a actual water column of about 30cm (12 inches)
From your experience is it possible, at some point, to have too much CO2 for plants?
I have GH=6, kh=4 and pH=5.7 so, theoretically i have 239.43ppm CO2. I know, i know... I shouldn't take into consideration that table, and I don't. But still...
I'm asking because despite the things looks fine on paper, plants are not happy. The CO2 seems to be enough (if I go lower than that red cherrys are obviously stressed... like... dead
The actual simptoms are: Pogostemon stellatus - melting, Pogostemon helferi - melting, Limnophila aromatica - grows very slow, all other plants are surviving but none of them are growing at the speed I know they can, and no one is pearling anymore.
So... I know the CO2 is not low. I know the flow is not insufficient. I know the nutrients are fine (full E.I.) + micros... I can't think of anything else
than maybe... something is too much.
From your experience, is this possible? Maybe too much CO2? Maybe too much water flow?
Any opinion or suggestion is welcome.
Many thanks.
Andrei.
Later edit: Sorry, I forgot to mention the light: that's 90W T8, Osram fluora, at a actual water column of about 30cm (12 inches)